Home / 120,386.30-166,160.74-80,101.76

Finding the Fourth Proportional to 120,386.30, 166,160.74 and 80,101.76

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Solution

The fourth proportional to 120,386.30, 166,160.74 and 80,101.76 is: 110,558.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,386.30 : 166,160.74 = 80,101.76 : x
  2. Step 2: Convert to fraction form
    120,386.30/166,160.74 = 80,101.76/x
  3. Step 3: Cross multiply
    120,386.30x = 166,160.74 × 80,101.76
  4. Step 4: Simplify right side
    120,386.30x = 13,309,767,716.90
  5. Step 5: Solve for x
    x = 13,309,767,716.90/120,386.30
  6. Step 6: Final answer
    x = 110,558.82

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1.5x scale

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.