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Finding the Fourth Proportional to 143,710.86, 198,327.11 and 80,048.69

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Solution

The fourth proportional to 143,710.86, 198,327.11 and 80,048.69 is: 110,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,710.86 : 198,327.11 = 80,048.69 : x
  2. Step 2: Convert to fraction form
    143,710.86/198,327.11 = 80,048.69/x
  3. Step 3: Cross multiply
    143,710.86x = 198,327.11 × 80,048.69
  4. Step 4: Simplify right side
    143,710.86x = 15,875,823,955.11
  5. Step 5: Solve for x
    x = 15,875,823,955.11/143,710.86
  6. Step 6: Final answer
    x = 110,470.59

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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.