Home / 120,385.30-166,159.36-80,100.76

Finding the Fourth Proportional to 120,385.30, 166,159.36 and 80,100.76

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Solution

The fourth proportional to 120,385.30, 166,159.36 and 80,100.76 is: 110,557.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,385.30 : 166,159.36 = 80,100.76 : x
  2. Step 2: Convert to fraction form
    120,385.30/166,159.36 = 80,100.76/x
  3. Step 3: Cross multiply
    120,385.30x = 166,159.36 × 80,100.76
  4. Step 4: Simplify right side
    120,385.30x = 13,309,491,017.11
  5. Step 5: Solve for x
    x = 13,309,491,017.11/120,385.30
  6. Step 6: Final answer
    x = 110,557.44

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