Home / 129,952,731.92-179,329,631.47-77,710,638.20

Finding the Fourth Proportional to 129,952,731.92, 179,329,631.47 and 77,710,638.20

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Solution

The fourth proportional to 129,952,731.92, 179,329,631.47 and 77,710,638.20 is: 107,237,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,952,731.92 : 179,329,631.47 = 77,710,638.20 : x
  2. Step 2: Convert to fraction form
    129,952,731.92/179,329,631.47 = 77,710,638.20/x
  3. Step 3: Cross multiply
    129,952,731.92x = 179,329,631.47 × 77,710,638.20
  4. Step 4: Simplify right side
    129,952,731.92x = 13,935,820,108,613,578
  5. Step 5: Solve for x
    x = 13,935,820,108,613,578/129,952,731.92
  6. Step 6: Final answer
    x = 107,237,607.88

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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.