Home / 129,901,508.32-179,264,066.36-77,690,535.92

Finding the Fourth Proportional to 129,901,508.32, 179,264,066.36 and 77,690,535.92

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Solution

The fourth proportional to 129,901,508.32, 179,264,066.36 and 77,690,535.92 is: 107,212,930.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,508.32 : 179,264,066.36 = 77,690,535.92 : x
  2. Step 2: Convert to fraction form
    129,901,508.32/179,264,066.36 = 77,690,535.92/x
  3. Step 3: Cross multiply
    129,901,508.32x = 179,264,066.36 × 77,690,535.92
  4. Step 4: Simplify right side
    129,901,508.32x = 13,927,121,386,706,846
  5. Step 5: Solve for x
    x = 13,927,121,386,706,846/129,901,508.32
  6. Step 6: Final answer
    x = 107,212,930.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.