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Finding the Fourth Proportional to 135,675.78, 187,244.06 and 75,265.88

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Solution

The fourth proportional to 135,675.78, 187,244.06 and 75,265.88 is: 103,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,675.78 : 187,244.06 = 75,265.88 : x
  2. Step 2: Convert to fraction form
    135,675.78/187,244.06 = 75,265.88/x
  3. Step 3: Cross multiply
    135,675.78x = 187,244.06 × 75,265.88
  4. Step 4: Simplify right side
    135,675.78x = 14,093,087,638.12
  5. Step 5: Solve for x
    x = 14,093,087,638.12/135,675.78
  6. Step 6: Final answer
    x = 103,873.28

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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.