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Finding the Fourth Proportional to 156,841.95, 216,445.11 and 85,226.61

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Solution

The fourth proportional to 156,841.95, 216,445.11 and 85,226.61 is: 117,614.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,841.95 : 216,445.11 = 85,226.61 : x
  2. Step 2: Convert to fraction form
    156,841.95/216,445.11 = 85,226.61/x
  3. Step 3: Cross multiply
    156,841.95x = 216,445.11 × 85,226.61
  4. Step 4: Simplify right side
    156,841.95x = 18,446,882,976.38
  5. Step 5: Solve for x
    x = 18,446,882,976.38/156,841.95
  6. Step 6: Final answer
    x = 117,614.47

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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.