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Finding the Fourth Proportional to 169,257.36, 253,949.22 and 90,327.72

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Solution

The fourth proportional to 169,257.36, 253,949.22 and 90,327.72 is: 135,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,257.36 : 253,949.22 = 90,327.72 : x
  2. Step 2: Convert to fraction form
    169,257.36/253,949.22 = 90,327.72/x
  3. Step 3: Cross multiply
    169,257.36x = 253,949.22 × 90,327.72
  4. Step 4: Simplify right side
    169,257.36x = 22,938,654,038.38
  5. Step 5: Solve for x
    x = 22,938,654,038.38/169,257.36
  6. Step 6: Final answer
    x = 135,525.30

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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.