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Finding the Fourth Proportional to 115,364.28, 159,203.25 and 64,379.28

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Solution

The fourth proportional to 115,364.28, 159,203.25 and 64,379.28 is: 88,843.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,364.28 : 159,203.25 = 64,379.28 : x
  2. Step 2: Convert to fraction form
    115,364.28/159,203.25 = 64,379.28/x
  3. Step 3: Cross multiply
    115,364.28x = 159,203.25 × 64,379.28
  4. Step 4: Simplify right side
    115,364.28x = 10,249,390,608.66
  5. Step 5: Solve for x
    x = 10,249,390,608.66/115,364.28
  6. Step 6: Final answer
    x = 88,843.71

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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.