Home / 129,942.40-179,318.57-72,582.52

Finding the Fourth Proportional to 129,942.40, 179,318.57 and 72,582.52

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Solution

The fourth proportional to 129,942.40, 179,318.57 and 72,582.52 is: 100,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,942.40 : 179,318.57 = 72,582.52 : x
  2. Step 2: Convert to fraction form
    129,942.40/179,318.57 = 72,582.52/x
  3. Step 3: Cross multiply
    129,942.40x = 179,318.57 × 72,582.52
  4. Step 4: Simplify right side
    129,942.40x = 13,015,392,796.80
  5. Step 5: Solve for x
    x = 13,015,392,796.80/129,942.40
  6. Step 6: Final answer
    x = 100,162.79

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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.