Home / 129,921.04-179,414.84-122,845.15

Finding the Fourth Proportional to 129,921.04, 179,414.84 and 122,845.15

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Solution

The fourth proportional to 129,921.04, 179,414.84 and 122,845.15 is: 169,643.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,921.04 : 179,414.84 = 122,845.15 : x
  2. Step 2: Convert to fraction form
    129,921.04/179,414.84 = 122,845.15/x
  3. Step 3: Cross multiply
    129,921.04x = 179,414.84 × 122,845.15
  4. Step 4: Simplify right side
    129,921.04x = 22,040,243,463.41
  5. Step 5: Solve for x
    x = 22,040,243,463.41/129,921.04
  6. Step 6: Final answer
    x = 169,643.37

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1.5x scale

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.