Home / 129,951.08-179,321.01-72,582.66

Finding the Fourth Proportional to 129,951.08, 179,321.01 and 72,582.66

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Solution

The fourth proportional to 129,951.08, 179,321.01 and 72,582.66 is: 100,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.08 : 179,321.01 = 72,582.66 : x
  2. Step 2: Convert to fraction form
    129,951.08/179,321.01 = 72,582.66/x
  3. Step 3: Cross multiply
    129,951.08x = 179,321.01 × 72,582.66
  4. Step 4: Simplify right side
    129,951.08x = 13,015,595,735.58
  5. Step 5: Solve for x
    x = 13,015,595,735.58/129,951.08
  6. Step 6: Final answer
    x = 100,157.65

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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.