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Finding the Fourth Proportional to 138,754.82, 191,481.71 and 75,092.69

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Solution

The fourth proportional to 138,754.82, 191,481.71 and 75,092.69 is: 103,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,754.82 : 191,481.71 = 75,092.69 : x
  2. Step 2: Convert to fraction form
    138,754.82/191,481.71 = 75,092.69/x
  3. Step 3: Cross multiply
    138,754.82x = 191,481.71 × 75,092.69
  4. Step 4: Simplify right side
    138,754.82x = 14,378,875,356.83
  5. Step 5: Solve for x
    x = 14,378,875,356.83/138,754.82
  6. Step 6: Final answer
    x = 103,627.94

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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.