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Finding the Fourth Proportional to 171,948.51, 258,064.92 and 87,770.88

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Solution

The fourth proportional to 171,948.51, 258,064.92 and 87,770.88 is: 131,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,948.51 : 258,064.92 = 87,770.88 : x
  2. Step 2: Convert to fraction form
    171,948.51/258,064.92 = 87,770.88/x
  3. Step 3: Cross multiply
    171,948.51x = 258,064.92 × 87,770.88
  4. Step 4: Simplify right side
    171,948.51x = 22,650,585,125.53
  5. Step 5: Solve for x
    x = 22,650,585,125.53/171,948.51
  6. Step 6: Final answer
    x = 131,728.88

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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.