Home / 129,961.08-179,358.35-78,962.06

Finding the Fourth Proportional to 129,961.08, 179,358.35 and 78,962.06

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Solution

The fourth proportional to 129,961.08, 179,358.35 and 78,962.06 is: 108,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,961.08 : 179,358.35 = 78,962.06 : x
  2. Step 2: Convert to fraction form
    129,961.08/179,358.35 = 78,962.06/x
  3. Step 3: Cross multiply
    129,961.08x = 179,358.35 × 78,962.06
  4. Step 4: Simplify right side
    129,961.08x = 14,162,503,502.60
  5. Step 5: Solve for x
    x = 14,162,503,502.60/129,961.08
  6. Step 6: Final answer
    x = 108,974.96

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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.