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Finding the Fourth Proportional to 115,371.76, 159,202.92 and 64,380.64

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Solution

The fourth proportional to 115,371.76, 159,202.92 and 64,380.64 is: 88,839.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,371.76 : 159,202.92 = 64,380.64 : x
  2. Step 2: Convert to fraction form
    115,371.76/159,202.92 = 64,380.64/x
  3. Step 3: Cross multiply
    115,371.76x = 159,202.92 × 64,380.64
  4. Step 4: Simplify right side
    115,371.76x = 10,249,585,879.47
  5. Step 5: Solve for x
    x = 10,249,585,879.47/115,371.76
  6. Step 6: Final answer
    x = 88,839.64

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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.