Home / 83,150.10-124,725.15-81,837.90

Finding the Fourth Proportional to 83,150.10, 124,725.15 and 81,837.90

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Solution

The fourth proportional to 83,150.10, 124,725.15 and 81,837.90 is: 122,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,150.10 : 124,725.15 = 81,837.90 : x
  2. Step 2: Convert to fraction form
    83,150.10/124,725.15 = 81,837.90/x
  3. Step 3: Cross multiply
    83,150.10x = 124,725.15 × 81,837.90
  4. Step 4: Simplify right side
    83,150.10x = 10,207,244,353.19
  5. Step 5: Solve for x
    x = 10,207,244,353.19/83,150.10
  6. Step 6: Final answer
    x = 122,756.85

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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.