Home / 100,182.28-138,251.59-54,863.08

Finding the Fourth Proportional to 100,182.28, 138,251.59 and 54,863.08

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Solution

The fourth proportional to 100,182.28, 138,251.59 and 54,863.08 is: 75,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,182.28 : 138,251.59 = 54,863.08 : x
  2. Step 2: Convert to fraction form
    100,182.28/138,251.59 = 54,863.08/x
  3. Step 3: Cross multiply
    100,182.28x = 138,251.59 × 54,863.08
  4. Step 4: Simplify right side
    100,182.28x = 7,584,907,767.98
  5. Step 5: Solve for x
    x = 7,584,907,767.98/100,182.28
  6. Step 6: Final answer
    x = 75,711.08

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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.