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Finding the Fourth Proportional to 143,601.92, 198,124.08 and 79,927.28

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Solution

The fourth proportional to 143,601.92, 198,124.08 and 79,927.28 is: 110,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,601.92 : 198,124.08 = 79,927.28 : x
  2. Step 2: Convert to fraction form
    143,601.92/198,124.08 = 79,927.28/x
  3. Step 3: Cross multiply
    143,601.92x = 198,124.08 × 79,927.28
  4. Step 4: Simplify right side
    143,601.92x = 15,835,518,816.90
  5. Step 5: Solve for x
    x = 15,835,518,816.90/143,601.92
  6. Step 6: Final answer
    x = 110,273.73

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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.