Home / 90,648,961.20-135,684,101.70-71,517,085.20

Finding the Fourth Proportional to 90,648,961.20, 135,684,101.70 and 71,517,085.20

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Solution

The fourth proportional to 90,648,961.20, 135,684,101.70 and 71,517,085.20 is: 107,047,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648,961.20 : 135,684,101.70 = 71,517,085.20 : x
  2. Step 2: Convert to fraction form
    90,648,961.20/135,684,101.70 = 71,517,085.20/x
  3. Step 3: Cross multiply
    90,648,961.20x = 135,684,101.70 × 71,517,085.20
  4. Step 4: Simplify right side
    90,648,961.20x = 9,703,731,461,564,364
  5. Step 5: Solve for x
    x = 9,703,731,461,564,364/90,648,961.20
  6. Step 6: Final answer
    x = 107,047,354.25

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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.