Home / 129,902.24-179,245.86-78,888.38

Finding the Fourth Proportional to 129,902.24, 179,245.86 and 78,888.38

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Solution

The fourth proportional to 129,902.24, 179,245.86 and 78,888.38 is: 108,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,902.24 : 179,245.86 = 78,888.38 : x
  2. Step 2: Convert to fraction form
    129,902.24/179,245.86 = 78,888.38/x
  3. Step 3: Cross multiply
    129,902.24x = 179,245.86 × 78,888.38
  4. Step 4: Simplify right side
    129,902.24x = 14,140,415,517.11
  5. Step 5: Solve for x
    x = 14,140,415,517.11/129,902.24
  6. Step 6: Final answer
    x = 108,854.29

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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.