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Finding the Fourth Proportional to 90,092.88, 124,257.16 and 84,056.72

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Solution

The fourth proportional to 90,092.88, 124,257.16 and 84,056.72 is: 115,932.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,092.88 : 124,257.16 = 84,056.72 : x
  2. Step 2: Convert to fraction form
    90,092.88/124,257.16 = 84,056.72/x
  3. Step 3: Cross multiply
    90,092.88x = 124,257.16 × 84,056.72
  4. Step 4: Simplify right side
    90,092.88x = 10,444,649,306.12
  5. Step 5: Solve for x
    x = 10,444,649,306.12/90,092.88
  6. Step 6: Final answer
    x = 115,932.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.