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Finding the Fourth Proportional to 138,753.23, 191,479.46 and 75,091.03

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Solution

The fourth proportional to 138,753.23, 191,479.46 and 75,091.03 is: 103,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,753.23 : 191,479.46 = 75,091.03 : x
  2. Step 2: Convert to fraction form
    138,753.23/191,479.46 = 75,091.03/x
  3. Step 3: Cross multiply
    138,753.23x = 191,479.46 × 75,091.03
  4. Step 4: Simplify right side
    138,753.23x = 14,378,389,194.00
  5. Step 5: Solve for x
    x = 14,378,389,194.00/138,753.23
  6. Step 6: Final answer
    x = 103,625.62

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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.