Home / 142,764.24-197,016-79,102.88

Finding the Fourth Proportional to 142,764.24, 197,016 and 79,102.88

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Solution

The fourth proportional to 142,764.24, 197,016 and 79,102.88 is: 109,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,764.24 : 197,016 = 79,102.88 : x
  2. Step 2: Convert to fraction form
    142,764.24/197,016 = 79,102.88/x
  3. Step 3: Cross multiply
    142,764.24x = 197,016 × 79,102.88
  4. Step 4: Simplify right side
    142,764.24x = 15,584,533,006.08
  5. Step 5: Solve for x
    x = 15,584,533,006.08/142,764.24
  6. Step 6: Final answer
    x = 109,162.72

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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.