Home / 115,895.92-159,930.84-71,175.28

Finding the Fourth Proportional to 115,895.92, 159,930.84 and 71,175.28

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Solution

The fourth proportional to 115,895.92, 159,930.84 and 71,175.28 is: 98,218.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,895.92 : 159,930.84 = 71,175.28 : x
  2. Step 2: Convert to fraction form
    115,895.92/159,930.84 = 71,175.28/x
  3. Step 3: Cross multiply
    115,895.92x = 159,930.84 × 71,175.28
  4. Step 4: Simplify right side
    115,895.92x = 11,383,122,317.64
  5. Step 5: Solve for x
    x = 11,383,122,317.64/115,895.92
  6. Step 6: Final answer
    x = 98,218.49

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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.