Home / 129,739.75-179,040.86-70,123.75

Finding the Fourth Proportional to 129,739.75, 179,040.86 and 70,123.75

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Solution

The fourth proportional to 129,739.75, 179,040.86 and 70,123.75 is: 96,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,739.75 : 179,040.86 = 70,123.75 : x
  2. Step 2: Convert to fraction form
    129,739.75/179,040.86 = 70,123.75/x
  3. Step 3: Cross multiply
    129,739.75x = 179,040.86 × 70,123.75
  4. Step 4: Simplify right side
    129,739.75x = 12,555,016,506.43
  5. Step 5: Solve for x
    x = 12,555,016,506.43/129,739.75
  6. Step 6: Final answer
    x = 96,770.78

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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.