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Finding the Fourth Proportional to 156,330, 215,751.80 and 95,886.79

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Solution

The fourth proportional to 156,330, 215,751.80 and 95,886.79 is: 132,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,330 : 215,751.80 = 95,886.79 : x
  2. Step 2: Convert to fraction form
    156,330/215,751.80 = 95,886.79/x
  3. Step 3: Cross multiply
    156,330x = 215,751.80 × 95,886.79
  4. Step 4: Simplify right side
    156,330x = 20,687,747,239.06
  5. Step 5: Solve for x
    x = 20,687,747,239.06/156,330
  6. Step 6: Final answer
    x = 132,333.83

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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.