Home / 138,928.28-191,764.68-88,627.28

Finding the Fourth Proportional to 138,928.28, 191,764.68 and 88,627.28

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Solution

The fourth proportional to 138,928.28, 191,764.68 and 88,627.28 is: 122,333.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,928.28 : 191,764.68 = 88,627.28 : x
  2. Step 2: Convert to fraction form
    138,928.28/191,764.68 = 88,627.28/x
  3. Step 3: Cross multiply
    138,928.28x = 191,764.68 × 88,627.28
  4. Step 4: Simplify right side
    138,928.28x = 16,995,581,988.47
  5. Step 5: Solve for x
    x = 16,995,581,988.47/138,928.28
  6. Step 6: Final answer
    x = 122,333.49

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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.