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Finding the Fourth Proportional to 99,695.42, 137,501.90 and 63,888.77

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Solution

The fourth proportional to 99,695.42, 137,501.90 and 63,888.77 is: 88,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,695.42 : 137,501.90 = 63,888.77 : x
  2. Step 2: Convert to fraction form
    99,695.42/137,501.90 = 63,888.77/x
  3. Step 3: Cross multiply
    99,695.42x = 137,501.90 × 63,888.77
  4. Step 4: Simplify right side
    99,695.42x = 8,784,827,263.66
  5. Step 5: Solve for x
    x = 8,784,827,263.66/99,695.42
  6. Step 6: Final answer
    x = 88,116.66

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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.