Home / 129,895.96-179,237.20-78,882.16

Finding the Fourth Proportional to 129,895.96, 179,237.20 and 78,882.16

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Solution

The fourth proportional to 129,895.96, 179,237.20 and 78,882.16 is: 108,845.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,895.96 : 179,237.20 = 78,882.16 : x
  2. Step 2: Convert to fraction form
    129,895.96/179,237.20 = 78,882.16/x
  3. Step 3: Cross multiply
    129,895.96x = 179,237.20 × 78,882.16
  4. Step 4: Simplify right side
    129,895.96x = 14,138,617,488.35
  5. Step 5: Solve for x
    x = 14,138,617,488.35/129,895.96
  6. Step 6: Final answer
    x = 108,845.71

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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.