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Finding the Fourth Proportional to 115,293.38, 159,104.86 and 64,992.38

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Solution

The fourth proportional to 115,293.38, 159,104.86 and 64,992.38 is: 89,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,293.38 : 159,104.86 = 64,992.38 : x
  2. Step 2: Convert to fraction form
    115,293.38/159,104.86 = 64,992.38/x
  3. Step 3: Cross multiply
    115,293.38x = 159,104.86 × 64,992.38
  4. Step 4: Simplify right side
    115,293.38x = 10,340,602,562.96
  5. Step 5: Solve for x
    x = 10,340,602,562.96/115,293.38
  6. Step 6: Final answer
    x = 89,689.48

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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.