Home / 103,720,164.10-155,580,246.15-80,761,912.90

Finding the Fourth Proportional to 103,720,164.10, 155,580,246.15 and 80,761,912.90

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Solution

The fourth proportional to 103,720,164.10, 155,580,246.15 and 80,761,912.90 is: 121,142,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,720,164.10 : 155,580,246.15 = 80,761,912.90 : x
  2. Step 2: Convert to fraction form
    103,720,164.10/155,580,246.15 = 80,761,912.90/x
  3. Step 3: Cross multiply
    103,720,164.10x = 155,580,246.15 × 80,761,912.90
  4. Step 4: Simplify right side
    103,720,164.10x = 12,564,958,288,526,862
  5. Step 5: Solve for x
    x = 12,564,958,288,526,862/103,720,164.10
  6. Step 6: Final answer
    x = 121,142,869.35

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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.