Home / 261,291.52-391,717.76-121,150.72

Finding the Fourth Proportional to 261,291.52, 391,717.76 and 121,150.72

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Solution

The fourth proportional to 261,291.52, 391,717.76 and 121,150.72 is: 181,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,291.52 : 391,717.76 = 121,150.72 : x
  2. Step 2: Convert to fraction form
    261,291.52/391,717.76 = 121,150.72/x
  3. Step 3: Cross multiply
    261,291.52x = 391,717.76 × 121,150.72
  4. Step 4: Simplify right side
    261,291.52x = 47,456,888,660.79
  5. Step 5: Solve for x
    x = 47,456,888,660.79/261,291.52
  6. Step 6: Final answer
    x = 181,624.30

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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.