Home / 129,993.74-179,392.55-76,279.65

Finding the Fourth Proportional to 129,993.74, 179,392.55 and 76,279.65

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Solution

The fourth proportional to 129,993.74, 179,392.55 and 76,279.65 is: 105,266.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,993.74 : 179,392.55 = 76,279.65 : x
  2. Step 2: Convert to fraction form
    129,993.74/179,392.55 = 76,279.65/x
  3. Step 3: Cross multiply
    129,993.74x = 179,392.55 × 76,279.65
  4. Step 4: Simplify right side
    129,993.74x = 13,683,999,872.49
  5. Step 5: Solve for x
    x = 13,683,999,872.49/129,993.74
  6. Step 6: Final answer
    x = 105,266.61

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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.