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Finding the Fourth Proportional to 156,502.72, 215,902.02 and 92,817.28

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Solution

The fourth proportional to 156,502.72, 215,902.02 and 92,817.28 is: 128,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,502.72 : 215,902.02 = 92,817.28 : x
  2. Step 2: Convert to fraction form
    156,502.72/215,902.02 = 92,817.28/x
  3. Step 3: Cross multiply
    156,502.72x = 215,902.02 × 92,817.28
  4. Step 4: Simplify right side
    156,502.72x = 20,039,438,242.91
  5. Step 5: Solve for x
    x = 20,039,438,242.91/156,502.72
  6. Step 6: Final answer
    x = 128,045.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.