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Finding the Fourth Proportional to 99,695.80, 137,502.41 and 63,889.14

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Solution

The fourth proportional to 99,695.80, 137,502.41 and 63,889.14 is: 88,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,695.80 : 137,502.41 = 63,889.14 : x
  2. Step 2: Convert to fraction form
    99,695.80/137,502.41 = 63,889.14/x
  3. Step 3: Cross multiply
    99,695.80x = 137,502.41 × 63,889.14
  4. Step 4: Simplify right side
    99,695.80x = 8,784,910,882.55
  5. Step 5: Solve for x
    x = 8,784,910,882.55/99,695.80
  6. Step 6: Final answer
    x = 88,117.16

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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.