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Finding the Fourth Proportional to 99,695.49, 137,501.97 and 63,888.83

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Solution

The fourth proportional to 99,695.49, 137,501.97 and 63,888.83 is: 88,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,695.49 : 137,501.97 = 63,888.83 : x
  2. Step 2: Convert to fraction form
    99,695.49/137,501.97 = 63,888.83/x
  3. Step 3: Cross multiply
    99,695.49x = 137,501.97 × 63,888.83
  4. Step 4: Simplify right side
    99,695.49x = 8,784,839,801.96
  5. Step 5: Solve for x
    x = 8,784,839,801.96/99,695.49
  6. Step 6: Final answer
    x = 88,116.73

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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.