Home / 129,666.66-194,498.05-79,080.54

Finding the Fourth Proportional to 129,666.66, 194,498.05 and 79,080.54

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Solution

The fourth proportional to 129,666.66, 194,498.05 and 79,080.54 is: 118,619.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,666.66 : 194,498.05 = 79,080.54 : x
  2. Step 2: Convert to fraction form
    129,666.66/194,498.05 = 79,080.54/x
  3. Step 3: Cross multiply
    129,666.66x = 194,498.05 × 79,080.54
  4. Step 4: Simplify right side
    129,666.66x = 15,381,010,822.95
  5. Step 5: Solve for x
    x = 15,381,010,822.95/129,666.66
  6. Step 6: Final answer
    x = 118,619.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.