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Finding the Fourth Proportional to 143,953.65, 198,656.31 and 80,295.54

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Solution

The fourth proportional to 143,953.65, 198,656.31 and 80,295.54 is: 110,808.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,953.65 : 198,656.31 = 80,295.54 : x
  2. Step 2: Convert to fraction form
    143,953.65/198,656.31 = 80,295.54/x
  3. Step 3: Cross multiply
    143,953.65x = 198,656.31 × 80,295.54
  4. Step 4: Simplify right side
    143,953.65x = 15,951,215,685.86
  5. Step 5: Solve for x
    x = 15,951,215,685.86/143,953.65
  6. Step 6: Final answer
    x = 110,808.00

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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.