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Finding the Fourth Proportional to 170,481.90, 255,880.41 and 86,301.14

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Solution

The fourth proportional to 170,481.90, 255,880.41 and 86,301.14 is: 129,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,481.90 : 255,880.41 = 86,301.14 : x
  2. Step 2: Convert to fraction form
    170,481.90/255,880.41 = 86,301.14/x
  3. Step 3: Cross multiply
    170,481.90x = 255,880.41 × 86,301.14
  4. Step 4: Simplify right side
    170,481.90x = 22,082,771,086.67
  5. Step 5: Solve for x
    x = 22,082,771,086.67/170,481.90
  6. Step 6: Final answer
    x = 129,531.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.