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Finding the Fourth Proportional to 144,368.48, 199,229.92 and 80,709.76

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Solution

The fourth proportional to 144,368.48, 199,229.92 and 80,709.76 is: 111,380.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,368.48 : 199,229.92 = 80,709.76 : x
  2. Step 2: Convert to fraction form
    144,368.48/199,229.92 = 80,709.76/x
  3. Step 3: Cross multiply
    144,368.48x = 199,229.92 × 80,709.76
  4. Step 4: Simplify right side
    144,368.48x = 16,079,799,028.02
  5. Step 5: Solve for x
    x = 16,079,799,028.02/144,368.48
  6. Step 6: Final answer
    x = 111,380.26

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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.