Home / 261,199.12-391,668.12-120,837.52

Finding the Fourth Proportional to 261,199.12, 391,668.12 and 120,837.52

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Solution

The fourth proportional to 261,199.12, 391,668.12 and 120,837.52 is: 181,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,199.12 : 391,668.12 = 120,837.52 : x
  2. Step 2: Convert to fraction form
    261,199.12/391,668.12 = 120,837.52/x
  3. Step 3: Cross multiply
    261,199.12x = 391,668.12 × 120,837.52
  4. Step 4: Simplify right side
    261,199.12x = 47,328,204,283.86
  5. Step 5: Solve for x
    x = 47,328,204,283.86/261,199.12
  6. Step 6: Final answer
    x = 181,195.88

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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.