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Finding the Fourth Proportional to 120,236.52, 165,825.72 and 90,092.64

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Solution

The fourth proportional to 120,236.52, 165,825.72 and 90,092.64 is: 124,252.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,236.52 : 165,825.72 = 90,092.64 : x
  2. Step 2: Convert to fraction form
    120,236.52/165,825.72 = 90,092.64/x
  3. Step 3: Cross multiply
    120,236.52x = 165,825.72 × 90,092.64
  4. Step 4: Simplify right side
    120,236.52x = 14,939,676,894.70
  5. Step 5: Solve for x
    x = 14,939,676,894.70/120,236.52
  6. Step 6: Final answer
    x = 124,252.41

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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.