Home / 100,647.20-138,872.40-60,350.24

Finding the Fourth Proportional to 100,647.20, 138,872.40 and 60,350.24

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Solution

The fourth proportional to 100,647.20, 138,872.40 and 60,350.24 is: 83,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,647.20 : 138,872.40 = 60,350.24 : x
  2. Step 2: Convert to fraction form
    100,647.20/138,872.40 = 60,350.24/x
  3. Step 3: Cross multiply
    100,647.20x = 138,872.40 × 60,350.24
  4. Step 4: Simplify right side
    100,647.20x = 8,380,982,669.38
  5. Step 5: Solve for x
    x = 8,380,982,669.38/100,647.20
  6. Step 6: Final answer
    x = 83,270.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.