Home / 129,899.46-179,242.04-78,885.66

Finding the Fourth Proportional to 129,899.46, 179,242.04 and 78,885.66

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Solution

The fourth proportional to 129,899.46, 179,242.04 and 78,885.66 is: 108,850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.46 : 179,242.04 = 78,885.66 : x
  2. Step 2: Convert to fraction form
    129,899.46/179,242.04 = 78,885.66/x
  3. Step 3: Cross multiply
    129,899.46x = 179,242.04 × 78,885.66
  4. Step 4: Simplify right side
    129,899.46x = 14,139,626,230.72
  5. Step 5: Solve for x
    x = 14,139,626,230.72/129,899.46
  6. Step 6: Final answer
    x = 108,850.54

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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.