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Finding the Fourth Proportional to 114,337.92, 171,189.96 and 86,172.72

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Solution

The fourth proportional to 114,337.92, 171,189.96 and 86,172.72 is: 129,020.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,337.92 : 171,189.96 = 86,172.72 : x
  2. Step 2: Convert to fraction form
    114,337.92/171,189.96 = 86,172.72/x
  3. Step 3: Cross multiply
    114,337.92x = 171,189.96 × 86,172.72
  4. Step 4: Simplify right side
    114,337.92x = 14,751,904,489.89
  5. Step 5: Solve for x
    x = 14,751,904,489.89/114,337.92
  6. Step 6: Final answer
    x = 129,020.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.