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Finding the Fourth Proportional to 100,241.80, 138,348.42 and 57,792.04

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Solution

The fourth proportional to 100,241.80, 138,348.42 and 57,792.04 is: 79,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,241.80 : 138,348.42 = 57,792.04 : x
  2. Step 2: Convert to fraction form
    100,241.80/138,348.42 = 57,792.04/x
  3. Step 3: Cross multiply
    100,241.80x = 138,348.42 × 57,792.04
  4. Step 4: Simplify right side
    100,241.80x = 7,995,437,422.58
  5. Step 5: Solve for x
    x = 7,995,437,422.58/100,241.80
  6. Step 6: Final answer
    x = 79,761.51

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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.