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Finding the Fourth Proportional to 143,937.63, 198,633.42 and 80,275.39

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Solution

The fourth proportional to 143,937.63, 198,633.42 and 80,275.39 is: 110,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,937.63 : 198,633.42 = 80,275.39 : x
  2. Step 2: Convert to fraction form
    143,937.63/198,633.42 = 80,275.39/x
  3. Step 3: Cross multiply
    143,937.63x = 198,633.42 × 80,275.39
  4. Step 4: Simplify right side
    143,937.63x = 15,945,374,760.95
  5. Step 5: Solve for x
    x = 15,945,374,760.95/143,937.63
  6. Step 6: Final answer
    x = 110,779.75

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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.