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Finding the Fourth Proportional to 156,269.57, 215,647.57 and 91,737.78

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Solution

The fourth proportional to 156,269.57, 215,647.57 and 91,737.78 is: 126,595.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,269.57 : 215,647.57 = 91,737.78 : x
  2. Step 2: Convert to fraction form
    156,269.57/215,647.57 = 91,737.78/x
  3. Step 3: Cross multiply
    156,269.57x = 215,647.57 × 91,737.78
  4. Step 4: Simplify right side
    156,269.57x = 19,783,028,026.61
  5. Step 5: Solve for x
    x = 19,783,028,026.61/156,269.57
  6. Step 6: Final answer
    x = 126,595.53

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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.