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Finding the Fourth Proportional to 172,342.60, 258,708.30 and 133,073.80

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Solution

The fourth proportional to 172,342.60, 258,708.30 and 133,073.80 is: 199,760.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,342.60 : 258,708.30 = 133,073.80 : x
  2. Step 2: Convert to fraction form
    172,342.60/258,708.30 = 133,073.80/x
  3. Step 3: Cross multiply
    172,342.60x = 258,708.30 × 133,073.80
  4. Step 4: Simplify right side
    172,342.60x = 34,427,296,572.54
  5. Step 5: Solve for x
    x = 34,427,296,572.54/172,342.60
  6. Step 6: Final answer
    x = 199,760.81

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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.