Home / 142,819.12-197,083.26-79,156.36

Finding the Fourth Proportional to 142,819.12, 197,083.26 and 79,156.36

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Solution

The fourth proportional to 142,819.12, 197,083.26 and 79,156.36 is: 109,231.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,819.12 : 197,083.26 = 79,156.36 : x
  2. Step 2: Convert to fraction form
    142,819.12/197,083.26 = 79,156.36/x
  3. Step 3: Cross multiply
    142,819.12x = 197,083.26 × 79,156.36
  4. Step 4: Simplify right side
    142,819.12x = 15,600,393,478.53
  5. Step 5: Solve for x
    x = 15,600,393,478.53/142,819.12
  6. Step 6: Final answer
    x = 109,231.83

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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.