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Finding the Fourth Proportional to 138,754.29, 191,480.92 and 75,092.07

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Solution

The fourth proportional to 138,754.29, 191,480.92 and 75,092.07 is: 103,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,754.29 : 191,480.92 = 75,092.07 : x
  2. Step 2: Convert to fraction form
    138,754.29/191,480.92 = 75,092.07/x
  3. Step 3: Cross multiply
    138,754.29x = 191,480.92 × 75,092.07
  4. Step 4: Simplify right side
    138,754.29x = 14,378,698,648.30
  5. Step 5: Solve for x
    x = 14,378,698,648.30/138,754.29
  6. Step 6: Final answer
    x = 103,627.06

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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.