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Finding the Fourth Proportional to 131,793.80, 181,888.46 and 75,213.68

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Solution

The fourth proportional to 131,793.80, 181,888.46 and 75,213.68 is: 103,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,793.80 : 181,888.46 = 75,213.68 : x
  2. Step 2: Convert to fraction form
    131,793.80/181,888.46 = 75,213.68/x
  3. Step 3: Cross multiply
    131,793.80x = 181,888.46 × 75,213.68
  4. Step 4: Simplify right side
    131,793.80x = 13,680,500,426.13
  5. Step 5: Solve for x
    x = 13,680,500,426.13/131,793.80
  6. Step 6: Final answer
    x = 103,802.31

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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.