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Finding the Fourth Proportional to 171,587.93, 257,294.13 and 71,720.87

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Solution

The fourth proportional to 171,587.93, 257,294.13 and 71,720.87 is: 107,544.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,587.93 : 257,294.13 = 71,720.87 : x
  2. Step 2: Convert to fraction form
    171,587.93/257,294.13 = 71,720.87/x
  3. Step 3: Cross multiply
    171,587.93x = 257,294.13 × 71,720.87
  4. Step 4: Simplify right side
    171,587.93x = 18,453,358,849.49
  5. Step 5: Solve for x
    x = 18,453,358,849.49/171,587.93
  6. Step 6: Final answer
    x = 107,544.62

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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.