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Finding the Fourth Proportional to 135,328.89, 186,748.13 and 74,893.88

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Solution

The fourth proportional to 135,328.89, 186,748.13 and 74,893.88 is: 103,350.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,328.89 : 186,748.13 = 74,893.88 : x
  2. Step 2: Convert to fraction form
    135,328.89/186,748.13 = 74,893.88/x
  3. Step 3: Cross multiply
    135,328.89x = 186,748.13 × 74,893.88
  4. Step 4: Simplify right side
    135,328.89x = 13,986,292,692.55
  5. Step 5: Solve for x
    x = 13,986,292,692.55/135,328.89
  6. Step 6: Final answer
    x = 103,350.38

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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.