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Finding the Fourth Proportional to 140,052.30, 193,288.52 and 79,632

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Solution

The fourth proportional to 140,052.30, 193,288.52 and 79,632 is: 109,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,052.30 : 193,288.52 = 79,632 : x
  2. Step 2: Convert to fraction form
    140,052.30/193,288.52 = 79,632/x
  3. Step 3: Cross multiply
    140,052.30x = 193,288.52 × 79,632
  4. Step 4: Simplify right side
    140,052.30x = 15,391,951,424.64
  5. Step 5: Solve for x
    x = 15,391,951,424.64/140,052.30
  6. Step 6: Final answer
    x = 109,901.45

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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.