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Finding the Fourth Proportional to 143,760.69, 198,391.10 and 79,232.30

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Solution

The fourth proportional to 143,760.69, 198,391.10 and 79,232.30 is: 109,341.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.69 : 198,391.10 = 79,232.30 : x
  2. Step 2: Convert to fraction form
    143,760.69/198,391.10 = 79,232.30/x
  3. Step 3: Cross multiply
    143,760.69x = 198,391.10 × 79,232.30
  4. Step 4: Simplify right side
    143,760.69x = 15,718,982,160.57
  5. Step 5: Solve for x
    x = 15,718,982,160.57/143,760.69
  6. Step 6: Final answer
    x = 109,341.31

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1.5x scale

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.