Home / 142,780.92-197,034.54-79,118.52

Finding the Fourth Proportional to 142,780.92, 197,034.54 and 79,118.52

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Solution

The fourth proportional to 142,780.92, 197,034.54 and 79,118.52 is: 109,181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,780.92 : 197,034.54 = 79,118.52 : x
  2. Step 2: Convert to fraction form
    142,780.92/197,034.54 = 79,118.52/x
  3. Step 3: Cross multiply
    142,780.92x = 197,034.54 × 79,118.52
  4. Step 4: Simplify right side
    142,780.92x = 15,589,081,193.68
  5. Step 5: Solve for x
    x = 15,589,081,193.68/142,780.92
  6. Step 6: Final answer
    x = 109,181.82

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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.