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Finding the Fourth Proportional to 120,992.76, 166,540.32 and 88,670.52

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Solution

The fourth proportional to 120,992.76, 166,540.32 and 88,670.52 is: 122,050.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,992.76 : 166,540.32 = 88,670.52 : x
  2. Step 2: Convert to fraction form
    120,992.76/166,540.32 = 88,670.52/x
  3. Step 3: Cross multiply
    120,992.76x = 166,540.32 × 88,670.52
  4. Step 4: Simplify right side
    120,992.76x = 14,767,216,775.37
  5. Step 5: Solve for x
    x = 14,767,216,775.37/120,992.76
  6. Step 6: Final answer
    x = 122,050.42

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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.