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Finding the Fourth Proportional to 99,695.92, 137,502.58 and 63,889.26

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Solution

The fourth proportional to 99,695.92, 137,502.58 and 63,889.26 is: 88,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,695.92 : 137,502.58 = 63,889.26 : x
  2. Step 2: Convert to fraction form
    99,695.92/137,502.58 = 63,889.26/x
  3. Step 3: Cross multiply
    99,695.92x = 137,502.58 × 63,889.26
  4. Step 4: Simplify right side
    99,695.92x = 8,784,938,084.29
  5. Step 5: Solve for x
    x = 8,784,938,084.29/99,695.92
  6. Step 6: Final answer
    x = 88,117.33

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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.