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Finding the Fourth Proportional to 135,503.86, 186,979.92 and 75,059.44

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Solution

The fourth proportional to 135,503.86, 186,979.92 and 75,059.44 is: 103,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,503.86 : 186,979.92 = 75,059.44 : x
  2. Step 2: Convert to fraction form
    135,503.86/186,979.92 = 75,059.44/x
  3. Step 3: Cross multiply
    135,503.86x = 186,979.92 × 75,059.44
  4. Step 4: Simplify right side
    135,503.86x = 14,034,608,086.44
  5. Step 5: Solve for x
    x = 14,034,608,086.44/135,503.86
  6. Step 6: Final answer
    x = 103,573.49

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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.