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Finding the Fourth Proportional to 261,169.29, 391,742.99 and 83,672.37

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Solution

The fourth proportional to 261,169.29, 391,742.99 and 83,672.37 is: 125,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,169.29 : 391,742.99 = 83,672.37 : x
  2. Step 2: Convert to fraction form
    261,169.29/391,742.99 = 83,672.37/x
  3. Step 3: Cross multiply
    261,169.29x = 391,742.99 × 83,672.37
  4. Step 4: Simplify right side
    261,169.29x = 32,778,065,592.72
  5. Step 5: Solve for x
    x = 32,778,065,592.72/261,169.29
  6. Step 6: Final answer
    x = 125,505.05

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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.