Home / 100,180.52-138,248.90-57,738.76

Finding the Fourth Proportional to 100,180.52, 138,248.90 and 57,738.76

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Solution

The fourth proportional to 100,180.52, 138,248.90 and 57,738.76 is: 79,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,180.52 : 138,248.90 = 57,738.76 : x
  2. Step 2: Convert to fraction form
    100,180.52/138,248.90 = 57,738.76/x
  3. Step 3: Cross multiply
    100,180.52x = 138,248.90 × 57,738.76
  4. Step 4: Simplify right side
    100,180.52x = 7,982,320,057.36
  5. Step 5: Solve for x
    x = 7,982,320,057.36/100,180.52
  6. Step 6: Final answer
    x = 79,679.36

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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.