Home / 261,138.16-391,716.52-83,622.10

Finding the Fourth Proportional to 261,138.16, 391,716.52 and 83,622.10

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Solution

The fourth proportional to 261,138.16, 391,716.52 and 83,622.10 is: 125,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,138.16 : 391,716.52 = 83,622.10 : x
  2. Step 2: Convert to fraction form
    261,138.16/391,716.52 = 83,622.10/x
  3. Step 3: Cross multiply
    261,138.16x = 391,716.52 × 83,622.10
  4. Step 4: Simplify right side
    261,138.16x = 32,756,156,609.69
  5. Step 5: Solve for x
    x = 32,756,156,609.69/261,138.16
  6. Step 6: Final answer
    x = 125,436.12

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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.