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Finding the Fourth Proportional to 135,439.92, 186,892.86 and 75,008.97

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Solution

The fourth proportional to 135,439.92, 186,892.86 and 75,008.97 is: 103,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,439.92 : 186,892.86 = 75,008.97 : x
  2. Step 2: Convert to fraction form
    135,439.92/186,892.86 = 75,008.97/x
  3. Step 3: Cross multiply
    135,439.92x = 186,892.86 × 75,008.97
  4. Step 4: Simplify right side
    135,439.92x = 14,018,640,928.95
  5. Step 5: Solve for x
    x = 14,018,640,928.95/135,439.92
  6. Step 6: Final answer
    x = 103,504.50

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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.