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Finding the Fourth Proportional to 143,710.67, 198,326.85 and 80,048.50

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Solution

The fourth proportional to 143,710.67, 198,326.85 and 80,048.50 is: 110,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,710.67 : 198,326.85 = 80,048.50 : x
  2. Step 2: Convert to fraction form
    143,710.67/198,326.85 = 80,048.50/x
  3. Step 3: Cross multiply
    143,710.67x = 198,326.85 × 80,048.50
  4. Step 4: Simplify right side
    143,710.67x = 15,875,766,056.23
  5. Step 5: Solve for x
    x = 15,875,766,056.23/143,710.67
  6. Step 6: Final answer
    x = 110,470.33

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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.