Home / 103,455,792,072.45-155,183,688,108.67-81,140,371,906.05

Finding the Fourth Proportional to 103,455,792,072.45, 155,183,688,108.67 and 81,140,371,906.05

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Solution

The fourth proportional to 103,455,792,072.45, 155,183,688,108.67 and 81,140,371,906.05 is: 121,710,557,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455,792,072.45 : 155,183,688,108.67 = 81,140,371,906.05 : x
  2. Step 2: Convert to fraction form
    103,455,792,072.45/155,183,688,108.67 = 81,140,371,906.05/x
  3. Step 3: Cross multiply
    103,455,792,072.45x = 155,183,688,108.67 × 81,140,371,906.05
  4. Step 4: Simplify right side
    103,455,792,072.45x = 12,591,662,166,889,954,541,568
  5. Step 5: Solve for x
    x = 12,591,662,166,889,954,541,568/103,455,792,072.45
  6. Step 6: Final answer
    x = 121,710,557,859.07

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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.