Home / 120,449.82-166,248.36-80,165.28

Finding the Fourth Proportional to 120,449.82, 166,248.36 and 80,165.28

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Solution

The fourth proportional to 120,449.82, 166,248.36 and 80,165.28 is: 110,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,449.82 : 166,248.36 = 80,165.28 : x
  2. Step 2: Convert to fraction form
    120,449.82/166,248.36 = 80,165.28/x
  3. Step 3: Cross multiply
    120,449.82x = 166,248.36 × 80,165.28
  4. Step 4: Simplify right side
    120,449.82x = 13,327,346,328.94
  5. Step 5: Solve for x
    x = 13,327,346,328.94/120,449.82
  6. Step 6: Final answer
    x = 110,646.46

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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.