Home / 129,808.33-179,148.03-78,809.24

Finding the Fourth Proportional to 129,808.33, 179,148.03 and 78,809.24

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Solution

The fourth proportional to 129,808.33, 179,148.03 and 78,809.24 is: 108,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,808.33 : 179,148.03 = 78,809.24 : x
  2. Step 2: Convert to fraction form
    129,808.33/179,148.03 = 78,809.24/x
  3. Step 3: Cross multiply
    129,808.33x = 179,148.03 × 78,809.24
  4. Step 4: Simplify right side
    129,808.33x = 14,118,520,091.80
  5. Step 5: Solve for x
    x = 14,118,520,091.80/129,808.33
  6. Step 6: Final answer
    x = 108,764.36

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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.