Home / 132,891,712.40-199,337,568.60-81,607,437.20

Finding the Fourth Proportional to 132,891,712.40, 199,337,568.60 and 81,607,437.20

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Solution

The fourth proportional to 132,891,712.40, 199,337,568.60 and 81,607,437.20 is: 122,411,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,891,712.40 : 199,337,568.60 = 81,607,437.20 : x
  2. Step 2: Convert to fraction form
    132,891,712.40/199,337,568.60 = 81,607,437.20/x
  3. Step 3: Cross multiply
    132,891,712.40x = 199,337,568.60 × 81,607,437.20
  4. Step 4: Simplify right side
    132,891,712.40x = 16,267,428,111,125,192
  5. Step 5: Solve for x
    x = 16,267,428,111,125,192/132,891,712.40
  6. Step 6: Final answer
    x = 122,411,155.80

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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.