Home / 80,930,155.80-121,395,233.70-72,427,099.80

Finding the Fourth Proportional to 80,930,155.80, 121,395,233.70 and 72,427,099.80

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Solution

The fourth proportional to 80,930,155.80, 121,395,233.70 and 72,427,099.80 is: 108,640,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,930,155.80 : 121,395,233.70 = 72,427,099.80 : x
  2. Step 2: Convert to fraction form
    80,930,155.80/121,395,233.70 = 72,427,099.80/x
  3. Step 3: Cross multiply
    80,930,155.80x = 121,395,233.70 × 72,427,099.80
  4. Step 4: Simplify right side
    80,930,155.80x = 8,792,304,706,434,223
  5. Step 5: Solve for x
    x = 8,792,304,706,434,223/80,930,155.80
  6. Step 6: Final answer
    x = 108,640,649.70

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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.