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Finding the Fourth Proportional to 143,967.75, 198,675.68 and 80,309.58

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Solution

The fourth proportional to 143,967.75, 198,675.68 and 80,309.58 is: 110,827.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,967.75 : 198,675.68 = 80,309.58 : x
  2. Step 2: Convert to fraction form
    143,967.75/198,675.68 = 80,309.58/x
  3. Step 3: Cross multiply
    143,967.75x = 198,675.68 × 80,309.58
  4. Step 4: Simplify right side
    143,967.75x = 15,955,560,015.47
  5. Step 5: Solve for x
    x = 15,955,560,015.47/143,967.75
  6. Step 6: Final answer
    x = 110,827.32

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1.5x scale

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.