Home / 142,791.04-197,053.28-79,129.88

Finding the Fourth Proportional to 142,791.04, 197,053.28 and 79,129.88

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Solution

The fourth proportional to 142,791.04, 197,053.28 and 79,129.88 is: 109,200.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,791.04 : 197,053.28 = 79,129.88 : x
  2. Step 2: Convert to fraction form
    142,791.04/197,053.28 = 79,129.88/x
  3. Step 3: Cross multiply
    142,791.04x = 197,053.28 × 79,129.88
  4. Step 4: Simplify right side
    142,791.04x = 15,592,802,400.01
  5. Step 5: Solve for x
    x = 15,592,802,400.01/142,791.04
  6. Step 6: Final answer
    x = 109,200.15

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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.