Home / 100,387.20-138,538.68-60,093.17

Finding the Fourth Proportional to 100,387.20, 138,538.68 and 60,093.17

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Solution

The fourth proportional to 100,387.20, 138,538.68 and 60,093.17 is: 82,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,387.20 : 138,538.68 = 60,093.17 : x
  2. Step 2: Convert to fraction form
    100,387.20/138,538.68 = 60,093.17/x
  3. Step 3: Cross multiply
    100,387.20x = 138,538.68 × 60,093.17
  4. Step 4: Simplify right side
    100,387.20x = 8,325,227,829.66
  5. Step 5: Solve for x
    x = 8,325,227,829.66/100,387.20
  6. Step 6: Final answer
    x = 82,931.17

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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.