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Finding the Fourth Proportional to 135,670.52, 187,236.52 and 75,260.64

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Solution

The fourth proportional to 135,670.52, 187,236.52 and 75,260.64 is: 103,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,670.52 : 187,236.52 = 75,260.64 : x
  2. Step 2: Convert to fraction form
    135,670.52/187,236.52 = 75,260.64/x
  3. Step 3: Cross multiply
    135,670.52x = 187,236.52 × 75,260.64
  4. Step 4: Simplify right side
    135,670.52x = 14,091,540,326.57
  5. Step 5: Solve for x
    x = 14,091,540,326.57/135,670.52
  6. Step 6: Final answer
    x = 103,865.90

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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.