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Finding the Fourth Proportional to 117,165.65, 161,687.75 and 63,449.42

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Solution

The fourth proportional to 117,165.65, 161,687.75 and 63,449.42 is: 87,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,165.65 : 161,687.75 = 63,449.42 : x
  2. Step 2: Convert to fraction form
    117,165.65/161,687.75 = 63,449.42/x
  3. Step 3: Cross multiply
    117,165.65x = 161,687.75 × 63,449.42
  4. Step 4: Simplify right side
    117,165.65x = 10,258,992,832.92
  5. Step 5: Solve for x
    x = 10,258,992,832.92/117,165.65
  6. Step 6: Final answer
    x = 87,559.74

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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.