Home / 129,179.04-178,258.72-75,479.20

Finding the Fourth Proportional to 129,179.04, 178,258.72 and 75,479.20

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Solution

The fourth proportional to 129,179.04, 178,258.72 and 75,479.20 is: 104,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,179.04 : 178,258.72 = 75,479.20 : x
  2. Step 2: Convert to fraction form
    129,179.04/178,258.72 = 75,479.20/x
  3. Step 3: Cross multiply
    129,179.04x = 178,258.72 × 75,479.20
  4. Step 4: Simplify right side
    129,179.04x = 13,454,825,578.62
  5. Step 5: Solve for x
    x = 13,454,825,578.62/129,179.04
  6. Step 6: Final answer
    x = 104,156.41

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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.