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Finding the Fourth Proportional to 156,304.93, 215,700.93 and 91,761.53

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Solution

The fourth proportional to 156,304.93, 215,700.93 and 91,761.53 is: 126,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,304.93 : 215,700.93 = 91,761.53 : x
  2. Step 2: Convert to fraction form
    156,304.93/215,700.93 = 91,761.53/x
  3. Step 3: Cross multiply
    156,304.93x = 215,700.93 × 91,761.53
  4. Step 4: Simplify right side
    156,304.93x = 19,793,046,900.42
  5. Step 5: Solve for x
    x = 19,793,046,900.42/156,304.93
  6. Step 6: Final answer
    x = 126,630.98

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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.