Home / 103,455,792,052.20-155,183,688,078.30-81,140,371,885.80

Finding the Fourth Proportional to 103,455,792,052.20, 155,183,688,078.30 and 81,140,371,885.80

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Solution

The fourth proportional to 103,455,792,052.20, 155,183,688,078.30 and 81,140,371,885.80 is: 121,710,557,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455,792,052.20 : 155,183,688,078.30 = 81,140,371,885.80 : x
  2. Step 2: Convert to fraction form
    103,455,792,052.20/155,183,688,078.30 = 81,140,371,885.80/x
  3. Step 3: Cross multiply
    103,455,792,052.20x = 155,183,688,078.30 × 81,140,371,885.80
  4. Step 4: Simplify right side
    103,455,792,052.20x = 12,591,662,161,283,250,126,848
  5. Step 5: Solve for x
    x = 12,591,662,161,283,250,126,848/103,455,792,052.20
  6. Step 6: Final answer
    x = 121,710,557,828.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.