Home / 138,586.68-191,249.64-74,924.46

Finding the Fourth Proportional to 138,586.68, 191,249.64 and 74,924.46

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Solution

The fourth proportional to 138,586.68, 191,249.64 and 74,924.46 is: 103,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,586.68 : 191,249.64 = 74,924.46 : x
  2. Step 2: Convert to fraction form
    138,586.68/191,249.64 = 74,924.46/x
  3. Step 3: Cross multiply
    138,586.68x = 191,249.64 × 74,924.46
  4. Step 4: Simplify right side
    138,586.68x = 14,329,275,627.57
  5. Step 5: Solve for x
    x = 14,329,275,627.57/138,586.68
  6. Step 6: Final answer
    x = 103,395.76

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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.