Home / 100,439.04-138,610.08-60,144.96

Finding the Fourth Proportional to 100,439.04, 138,610.08 and 60,144.96

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Solution

The fourth proportional to 100,439.04, 138,610.08 and 60,144.96 is: 83,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,439.04 : 138,610.08 = 60,144.96 : x
  2. Step 2: Convert to fraction form
    100,439.04/138,610.08 = 60,144.96/x
  3. Step 3: Cross multiply
    100,439.04x = 138,610.08 × 60,144.96
  4. Step 4: Simplify right side
    100,439.04x = 8,336,697,717.20
  5. Step 5: Solve for x
    x = 8,336,697,717.20/100,439.04
  6. Step 6: Final answer
    x = 83,002.56

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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.