Home / 100,183.60-138,253.60-54,864.55

Finding the Fourth Proportional to 100,183.60, 138,253.60 and 54,864.55

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Solution

The fourth proportional to 100,183.60, 138,253.60 and 54,864.55 is: 75,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,183.60 : 138,253.60 = 54,864.55 : x
  2. Step 2: Convert to fraction form
    100,183.60/138,253.60 = 54,864.55/x
  3. Step 3: Cross multiply
    100,183.60x = 138,253.60 × 54,864.55
  4. Step 4: Simplify right side
    100,183.60x = 7,585,221,549.88
  5. Step 5: Solve for x
    x = 7,585,221,549.88/100,183.60
  6. Step 6: Final answer
    x = 75,713.21

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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.