Home / 100,648.20-138,873.78-60,351.24

Finding the Fourth Proportional to 100,648.20, 138,873.78 and 60,351.24

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Solution

The fourth proportional to 100,648.20, 138,873.78 and 60,351.24 is: 83,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,648.20 : 138,873.78 = 60,351.24 : x
  2. Step 2: Convert to fraction form
    100,648.20/138,873.78 = 60,351.24/x
  3. Step 3: Cross multiply
    100,648.20x = 138,873.78 × 60,351.24
  4. Step 4: Simplify right side
    100,648.20x = 8,381,204,826.49
  5. Step 5: Solve for x
    x = 8,381,204,826.49/100,648.20
  6. Step 6: Final answer
    x = 83,272.28

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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.