Home / 261,052.38-391,387.05-83,457.18

Finding the Fourth Proportional to 261,052.38, 391,387.05 and 83,457.18

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Solution

The fourth proportional to 261,052.38, 391,387.05 and 83,457.18 is: 125,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,052.38 : 391,387.05 = 83,457.18 : x
  2. Step 2: Convert to fraction form
    261,052.38/391,387.05 = 83,457.18/x
  3. Step 3: Cross multiply
    261,052.38x = 391,387.05 × 83,457.18
  4. Step 4: Simplify right side
    261,052.38x = 32,664,059,481.52
  5. Step 5: Solve for x
    x = 32,664,059,481.52/261,052.38
  6. Step 6: Final answer
    x = 125,124.54

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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.