Home / 126,419.30-173,922.09-122,920.10

Finding the Fourth Proportional to 126,419.30, 173,922.09 and 122,920.10

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Solution

The fourth proportional to 126,419.30, 173,922.09 and 122,920.10 is: 169,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,419.30 : 173,922.09 = 122,920.10 : x
  2. Step 2: Convert to fraction form
    126,419.30/173,922.09 = 122,920.10/x
  3. Step 3: Cross multiply
    126,419.30x = 173,922.09 × 122,920.10
  4. Step 4: Simplify right side
    126,419.30x = 21,378,520,695.01
  5. Step 5: Solve for x
    x = 21,378,520,695.01/126,419.30
  6. Step 6: Final answer
    x = 169,108.05

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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.