Home / 129,872.58-179,216.19-72,508.14

Finding the Fourth Proportional to 129,872.58, 179,216.19 and 72,508.14

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Solution

The fourth proportional to 129,872.58, 179,216.19 and 72,508.14 is: 100,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,872.58 : 179,216.19 = 72,508.14 : x
  2. Step 2: Convert to fraction form
    129,872.58/179,216.19 = 72,508.14/x
  3. Step 3: Cross multiply
    129,872.58x = 179,216.19 × 72,508.14
  4. Step 4: Simplify right side
    129,872.58x = 12,994,632,594.79
  5. Step 5: Solve for x
    x = 12,994,632,594.79/129,872.58
  6. Step 6: Final answer
    x = 100,056.78

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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.