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Finding the Fourth Proportional to 172,061.96, 257,992.50 and 66,757.92

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Solution

The fourth proportional to 172,061.96, 257,992.50 and 66,757.92 is: 100,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,061.96 : 257,992.50 = 66,757.92 : x
  2. Step 2: Convert to fraction form
    172,061.96/257,992.50 = 66,757.92/x
  3. Step 3: Cross multiply
    172,061.96x = 257,992.50 × 66,757.92
  4. Step 4: Simplify right side
    172,061.96x = 17,223,042,675.60
  5. Step 5: Solve for x
    x = 17,223,042,675.60/172,061.96
  6. Step 6: Final answer
    x = 100,097.91

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1.5x scale

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.