Home / 126,918.70-190,248.45-74,301.10

Finding the Fourth Proportional to 126,918.70, 190,248.45 and 74,301.10

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Solution

The fourth proportional to 126,918.70, 190,248.45 and 74,301.10 is: 111,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,918.70 : 190,248.45 = 74,301.10 : x
  2. Step 2: Convert to fraction form
    126,918.70/190,248.45 = 74,301.10/x
  3. Step 3: Cross multiply
    126,918.70x = 190,248.45 × 74,301.10
  4. Step 4: Simplify right side
    126,918.70x = 14,135,669,108.30
  5. Step 5: Solve for x
    x = 14,135,669,108.30/126,918.70
  6. Step 6: Final answer
    x = 111,375.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.