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Finding the Fourth Proportional to 155,951.89, 215,214.13 and 84,332.43

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Solution

The fourth proportional to 155,951.89, 215,214.13 and 84,332.43 is: 116,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,951.89 : 215,214.13 = 84,332.43 : x
  2. Step 2: Convert to fraction form
    155,951.89/215,214.13 = 84,332.43/x
  3. Step 3: Cross multiply
    155,951.89x = 215,214.13 × 84,332.43
  4. Step 4: Simplify right side
    155,951.89x = 18,149,530,000.23
  5. Step 5: Solve for x
    x = 18,149,530,000.23/155,951.89
  6. Step 6: Final answer
    x = 116,379.03

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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.