Home / 100,334.30-138,460.19-57,891.92

Finding the Fourth Proportional to 100,334.30, 138,460.19 and 57,891.92

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Solution

The fourth proportional to 100,334.30, 138,460.19 and 57,891.92 is: 79,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334.30 : 138,460.19 = 57,891.92 : x
  2. Step 2: Convert to fraction form
    100,334.30/138,460.19 = 57,891.92/x
  3. Step 3: Cross multiply
    100,334.30x = 138,460.19 × 57,891.92
  4. Step 4: Simplify right side
    100,334.30x = 8,015,725,260.90
  5. Step 5: Solve for x
    x = 8,015,725,260.90/100,334.30
  6. Step 6: Final answer
    x = 79,890.18

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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.