Home / 142,672.20-196,891.91-79,008.63

Finding the Fourth Proportional to 142,672.20, 196,891.91 and 79,008.63

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Solution

The fourth proportional to 142,672.20, 196,891.91 and 79,008.63 is: 109,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,672.20 : 196,891.91 = 79,008.63 : x
  2. Step 2: Convert to fraction form
    142,672.20/196,891.91 = 79,008.63/x
  3. Step 3: Cross multiply
    142,672.20x = 196,891.91 × 79,008.63
  4. Step 4: Simplify right side
    142,672.20x = 15,556,160,067.18
  5. Step 5: Solve for x
    x = 15,556,160,067.18/142,672.20
  6. Step 6: Final answer
    x = 109,034.28

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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.