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Finding the Fourth Proportional to 115,335.43, 159,162.92 and 65,034.43

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Solution

The fourth proportional to 115,335.43, 159,162.92 and 65,034.43 is: 89,747.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,335.43 : 159,162.92 = 65,034.43 : x
  2. Step 2: Convert to fraction form
    115,335.43/159,162.92 = 65,034.43/x
  3. Step 3: Cross multiply
    115,335.43x = 159,162.92 × 65,034.43
  4. Step 4: Simplify right side
    115,335.43x = 10,351,069,779.34
  5. Step 5: Solve for x
    x = 10,351,069,779.34/115,335.43
  6. Step 6: Final answer
    x = 89,747.53

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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.