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Finding the Fourth Proportional to 135,656, 187,207.56 and 75,229.22

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Solution

The fourth proportional to 135,656, 187,207.56 and 75,229.22 is: 103,817.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,656 : 187,207.56 = 75,229.22 : x
  2. Step 2: Convert to fraction form
    135,656/187,207.56 = 75,229.22/x
  3. Step 3: Cross multiply
    135,656x = 187,207.56 × 75,229.22
  4. Step 4: Simplify right side
    135,656x = 14,083,478,716.90
  5. Step 5: Solve for x
    x = 14,083,478,716.90/135,656
  6. Step 6: Final answer
    x = 103,817.59

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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.