Home / 129,937.50-179,317.26-78,932.88

Finding the Fourth Proportional to 129,937.50, 179,317.26 and 78,932.88

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Solution

The fourth proportional to 129,937.50, 179,317.26 and 78,932.88 is: 108,929.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,937.50 : 179,317.26 = 78,932.88 : x
  2. Step 2: Convert to fraction form
    129,937.50/179,317.26 = 78,932.88/x
  3. Step 3: Cross multiply
    129,937.50x = 179,317.26 × 78,932.88
  4. Step 4: Simplify right side
    129,937.50x = 14,154,027,765.51
  5. Step 5: Solve for x
    x = 14,154,027,765.51/129,937.50
  6. Step 6: Final answer
    x = 108,929.51

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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.