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Finding the Fourth Proportional to 172,125.60, 258,382.80 and 132,856.80

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Solution

The fourth proportional to 172,125.60, 258,382.80 and 132,856.80 is: 199,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,125.60 : 258,382.80 = 132,856.80 : x
  2. Step 2: Convert to fraction form
    172,125.60/258,382.80 = 132,856.80/x
  3. Step 3: Cross multiply
    172,125.60x = 258,382.80 × 132,856.80
  4. Step 4: Simplify right side
    172,125.60x = 34,327,911,983.04
  5. Step 5: Solve for x
    x = 34,327,911,983.04/172,125.60
  6. Step 6: Final answer
    x = 199,435.25

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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.