Home / 120,631.30-166,457.75-66,902.85

Finding the Fourth Proportional to 120,631.30, 166,457.75 and 66,902.85

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Solution

The fourth proportional to 120,631.30, 166,457.75 and 66,902.85 is: 92,318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.30 : 166,457.75 = 66,902.85 : x
  2. Step 2: Convert to fraction form
    120,631.30/166,457.75 = 66,902.85/x
  3. Step 3: Cross multiply
    120,631.30x = 166,457.75 × 66,902.85
  4. Step 4: Simplify right side
    120,631.30x = 11,136,498,046.84
  5. Step 5: Solve for x
    x = 11,136,498,046.84/120,631.30
  6. Step 6: Final answer
    x = 92,318.48

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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.