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Finding the Fourth Proportional to 169,261.88, 254,045.10 and 90,443.48

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Solution

The fourth proportional to 169,261.88, 254,045.10 and 90,443.48 is: 135,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,261.88 : 254,045.10 = 90,443.48 : x
  2. Step 2: Convert to fraction form
    169,261.88/254,045.10 = 90,443.48/x
  3. Step 3: Cross multiply
    169,261.88x = 254,045.10 × 90,443.48
  4. Step 4: Simplify right side
    169,261.88x = 22,976,722,920.95
  5. Step 5: Solve for x
    x = 22,976,722,920.95/169,261.88
  6. Step 6: Final answer
    x = 135,746.59

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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.