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Finding the Fourth Proportional to 117,326.72, 161,873.52 and 71,958.08

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Solution

The fourth proportional to 117,326.72, 161,873.52 and 71,958.08 is: 99,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,326.72 : 161,873.52 = 71,958.08 : x
  2. Step 2: Convert to fraction form
    117,326.72/161,873.52 = 71,958.08/x
  3. Step 3: Cross multiply
    117,326.72x = 161,873.52 × 71,958.08
  4. Step 4: Simplify right side
    117,326.72x = 11,648,107,702.04
  5. Step 5: Solve for x
    x = 11,648,107,702.04/117,326.72
  6. Step 6: Final answer
    x = 99,279.24

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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.