Home / 142,874.16-197,170.92-79,217.88

Finding the Fourth Proportional to 142,874.16, 197,170.92 and 79,217.88

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Solution

The fourth proportional to 142,874.16, 197,170.92 and 79,217.88 is: 109,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,874.16 : 197,170.92 = 79,217.88 : x
  2. Step 2: Convert to fraction form
    142,874.16/197,170.92 = 79,217.88/x
  3. Step 3: Cross multiply
    142,874.16x = 197,170.92 × 79,217.88
  4. Step 4: Simplify right side
    142,874.16x = 15,619,462,280.05
  5. Step 5: Solve for x
    x = 15,619,462,280.05/142,874.16
  6. Step 6: Final answer
    x = 109,323.21

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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.