Home / 100,558.38-138,761.88-57,529.14

Finding the Fourth Proportional to 100,558.38, 138,761.88 and 57,529.14

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Solution

The fourth proportional to 100,558.38, 138,761.88 and 57,529.14 is: 79,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.38 : 138,761.88 = 57,529.14 : x
  2. Step 2: Convert to fraction form
    100,558.38/138,761.88 = 57,529.14/x
  3. Step 3: Cross multiply
    100,558.38x = 138,761.88 × 57,529.14
  4. Step 4: Simplify right side
    100,558.38x = 7,982,851,621.18
  5. Step 5: Solve for x
    x = 7,982,851,621.18/100,558.38
  6. Step 6: Final answer
    x = 79,385.24

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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.