Home / 129,993.73-179,392.55-76,279.66

Finding the Fourth Proportional to 129,993.73, 179,392.55 and 76,279.66

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Solution

The fourth proportional to 129,993.73, 179,392.55 and 76,279.66 is: 105,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,993.73 : 179,392.55 = 76,279.66 : x
  2. Step 2: Convert to fraction form
    129,993.73/179,392.55 = 76,279.66/x
  3. Step 3: Cross multiply
    129,993.73x = 179,392.55 × 76,279.66
  4. Step 4: Simplify right side
    129,993.73x = 13,684,001,890.65
  5. Step 5: Solve for x
    x = 13,684,001,890.65/129,993.73
  6. Step 6: Final answer
    x = 105,266.63

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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.