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Finding the Fourth Proportional to 143,988.48, 198,703.54 and 80,326.24

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Solution

The fourth proportional to 143,988.48, 198,703.54 and 80,326.24 is: 110,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,988.48 : 198,703.54 = 80,326.24 : x
  2. Step 2: Convert to fraction form
    143,988.48/198,703.54 = 80,326.24/x
  3. Step 3: Cross multiply
    143,988.48x = 198,703.54 × 80,326.24
  4. Step 4: Simplify right side
    143,988.48x = 15,961,108,242.89
  5. Step 5: Solve for x
    x = 15,961,108,242.89/143,988.48
  6. Step 6: Final answer
    x = 110,849.90

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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.