Home / 138,419.24-191,018.48-74,757.04

Finding the Fourth Proportional to 138,419.24, 191,018.48 and 74,757.04

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Solution

The fourth proportional to 138,419.24, 191,018.48 and 74,757.04 is: 103,164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,419.24 : 191,018.48 = 74,757.04 : x
  2. Step 2: Convert to fraction form
    138,419.24/191,018.48 = 74,757.04/x
  3. Step 3: Cross multiply
    138,419.24x = 191,018.48 × 74,757.04
  4. Step 4: Simplify right side
    138,419.24x = 14,279,976,150.10
  5. Step 5: Solve for x
    x = 14,279,976,150.10/138,419.24
  6. Step 6: Final answer
    x = 103,164.68

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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.