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Finding the Fourth Proportional to 156,474.66, 215,935.14 and 84,854.66

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Solution

The fourth proportional to 156,474.66, 215,935.14 and 84,854.66 is: 117,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,474.66 : 215,935.14 = 84,854.66 : x
  2. Step 2: Convert to fraction form
    156,474.66/215,935.14 = 84,854.66/x
  3. Step 3: Cross multiply
    156,474.66x = 215,935.14 × 84,854.66
  4. Step 4: Simplify right side
    156,474.66x = 18,323,102,886.75
  5. Step 5: Solve for x
    x = 18,323,102,886.75/156,474.66
  6. Step 6: Final answer
    x = 117,099.49

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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.