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Finding the Fourth Proportional to 98,373.52, 135,414.20 and 74,458

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Solution

The fourth proportional to 98,373.52, 135,414.20 and 74,458 is: 102,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,373.52 : 135,414.20 = 74,458 : x
  2. Step 2: Convert to fraction form
    98,373.52/135,414.20 = 74,458/x
  3. Step 3: Cross multiply
    98,373.52x = 135,414.20 × 74,458
  4. Step 4: Simplify right side
    98,373.52x = 10,082,670,503.60
  5. Step 5: Solve for x
    x = 10,082,670,503.60/98,373.52
  6. Step 6: Final answer
    x = 102,493.75

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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.