Home / 129,920.90-179,414.66-122,845.01

Finding the Fourth Proportional to 129,920.90, 179,414.66 and 122,845.01

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Solution

The fourth proportional to 129,920.90, 179,414.66 and 122,845.01 is: 169,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,920.90 : 179,414.66 = 122,845.01 : x
  2. Step 2: Convert to fraction form
    129,920.90/179,414.66 = 122,845.01/x
  3. Step 3: Cross multiply
    129,920.90x = 179,414.66 × 122,845.01
  4. Step 4: Simplify right side
    129,920.90x = 22,040,195,111.89
  5. Step 5: Solve for x
    x = 22,040,195,111.89/129,920.90
  6. Step 6: Final answer
    x = 169,643.19

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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.