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Finding the Fourth Proportional to 168,648.72, 253,016.80 and 89,698

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Solution

The fourth proportional to 168,648.72, 253,016.80 and 89,698 is: 134,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,648.72 : 253,016.80 = 89,698 : x
  2. Step 2: Convert to fraction form
    168,648.72/253,016.80 = 89,698/x
  3. Step 3: Cross multiply
    168,648.72x = 253,016.80 × 89,698
  4. Step 4: Simplify right side
    168,648.72x = 22,695,100,926.40
  5. Step 5: Solve for x
    x = 22,695,100,926.40/168,648.72
  6. Step 6: Final answer
    x = 134,570.25

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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.