Home / 138,659.64-191,350.31-74,997.43

Finding the Fourth Proportional to 138,659.64, 191,350.31 and 74,997.43

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Solution

The fourth proportional to 138,659.64, 191,350.31 and 74,997.43 is: 103,496.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,659.64 : 191,350.31 = 74,997.43 : x
  2. Step 2: Convert to fraction form
    138,659.64/191,350.31 = 74,997.43/x
  3. Step 3: Cross multiply
    138,659.64x = 191,350.31 × 74,997.43
  4. Step 4: Simplify right side
    138,659.64x = 14,350,781,479.70
  5. Step 5: Solve for x
    x = 14,350,781,479.70/138,659.64
  6. Step 6: Final answer
    x = 103,496.46

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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.