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Finding the Fourth Proportional to 135,907.39, 187,551.46 and 74,654.78

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Solution

The fourth proportional to 135,907.39, 187,551.46 and 74,654.78 is: 103,023.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,907.39 : 187,551.46 = 74,654.78 : x
  2. Step 2: Convert to fraction form
    135,907.39/187,551.46 = 74,654.78/x
  3. Step 3: Cross multiply
    135,907.39x = 187,551.46 × 74,654.78
  4. Step 4: Simplify right side
    135,907.39x = 14,001,612,984.98
  5. Step 5: Solve for x
    x = 14,001,612,984.98/135,907.39
  6. Step 6: Final answer
    x = 103,023.19

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1.5x scale

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.