Home / 129,724.60-194,258.85-103,480.60

Finding the Fourth Proportional to 129,724.60, 194,258.85 and 103,480.60

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Solution

The fourth proportional to 129,724.60, 194,258.85 and 103,480.60 is: 154,959.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,724.60 : 194,258.85 = 103,480.60 : x
  2. Step 2: Convert to fraction form
    129,724.60/194,258.85 = 103,480.60/x
  3. Step 3: Cross multiply
    129,724.60x = 194,258.85 × 103,480.60
  4. Step 4: Simplify right side
    129,724.60x = 20,102,022,353.31
  5. Step 5: Solve for x
    x = 20,102,022,353.31/129,724.60
  6. Step 6: Final answer
    x = 154,959.22

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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.