Home / 261,140.40-391,719.89-83,624.35

Finding the Fourth Proportional to 261,140.40, 391,719.89 and 83,624.35

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Solution

The fourth proportional to 261,140.40, 391,719.89 and 83,624.35 is: 125,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,140.40 : 391,719.89 = 83,624.35 : x
  2. Step 2: Convert to fraction form
    261,140.40/391,719.89 = 83,624.35/x
  3. Step 3: Cross multiply
    261,140.40x = 391,719.89 × 83,624.35
  4. Step 4: Simplify right side
    261,140.40x = 32,757,319,785.90
  5. Step 5: Solve for x
    x = 32,757,319,785.90/261,140.40
  6. Step 6: Final answer
    x = 125,439.49

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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.