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Finding the Fourth Proportional to 131,805.63, 181,891.90 and 71,376.34

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Solution

The fourth proportional to 131,805.63, 181,891.90 and 71,376.34 is: 98,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,805.63 : 181,891.90 = 71,376.34 : x
  2. Step 2: Convert to fraction form
    131,805.63/181,891.90 = 71,376.34/x
  3. Step 3: Cross multiply
    131,805.63x = 181,891.90 × 71,376.34
  4. Step 4: Simplify right side
    131,805.63x = 12,982,778,097.65
  5. Step 5: Solve for x
    x = 12,982,778,097.65/131,805.63
  6. Step 6: Final answer
    x = 98,499.42

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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.