Home / 143,372.28-197,842.54-79,706.20

Finding the Fourth Proportional to 143,372.28, 197,842.54 and 79,706.20

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Solution

The fourth proportional to 143,372.28, 197,842.54 and 79,706.20 is: 109,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,372.28 : 197,842.54 = 79,706.20 : x
  2. Step 2: Convert to fraction form
    143,372.28/197,842.54 = 79,706.20/x
  3. Step 3: Cross multiply
    143,372.28x = 197,842.54 × 79,706.20
  4. Step 4: Simplify right side
    143,372.28x = 15,769,277,061.75
  5. Step 5: Solve for x
    x = 15,769,277,061.75/143,372.28
  6. Step 6: Final answer
    x = 109,988.33

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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.