Home / 261,234.16-391,906.65-83,865.76

Finding the Fourth Proportional to 261,234.16, 391,906.65 and 83,865.76

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Solution

The fourth proportional to 261,234.16, 391,906.65 and 83,865.76 is: 125,816.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,234.16 : 391,906.65 = 83,865.76 : x
  2. Step 2: Convert to fraction form
    261,234.16/391,906.65 = 83,865.76/x
  3. Step 3: Cross multiply
    261,234.16x = 391,906.65 × 83,865.76
  4. Step 4: Simplify right side
    261,234.16x = 32,867,548,386.03
  5. Step 5: Solve for x
    x = 32,867,548,386.03/261,234.16
  6. Step 6: Final answer
    x = 125,816.43

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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.