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Finding the Fourth Proportional to 144,420.88, 199,310 and 80,758.68

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Solution

The fourth proportional to 144,420.88, 199,310 and 80,758.68 is: 111,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,420.88 : 199,310 = 80,758.68 : x
  2. Step 2: Convert to fraction form
    144,420.88/199,310 = 80,758.68/x
  3. Step 3: Cross multiply
    144,420.88x = 199,310 × 80,758.68
  4. Step 4: Simplify right side
    144,420.88x = 16,096,012,510.80
  5. Step 5: Solve for x
    x = 16,096,012,510.80/144,420.88
  6. Step 6: Final answer
    x = 111,452.11

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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.