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Finding the Fourth Proportional to 131,958.72, 198,015.84 and 53,080.92

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Solution

The fourth proportional to 131,958.72, 198,015.84 and 53,080.92 is: 79,652.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,958.72 : 198,015.84 = 53,080.92 : x
  2. Step 2: Convert to fraction form
    131,958.72/198,015.84 = 53,080.92/x
  3. Step 3: Cross multiply
    131,958.72x = 198,015.84 × 53,080.92
  4. Step 4: Simplify right side
    131,958.72x = 10,510,862,961.77
  5. Step 5: Solve for x
    x = 10,510,862,961.77/131,958.72
  6. Step 6: Final answer
    x = 79,652.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.