Home / 120,382.79-166,155.90-80,098.25

Finding the Fourth Proportional to 120,382.79, 166,155.90 and 80,098.25

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Solution

The fourth proportional to 120,382.79, 166,155.90 and 80,098.25 is: 110,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382.79 : 166,155.90 = 80,098.25 : x
  2. Step 2: Convert to fraction form
    120,382.79/166,155.90 = 80,098.25/x
  3. Step 3: Cross multiply
    120,382.79x = 166,155.90 × 80,098.25
  4. Step 4: Simplify right side
    120,382.79x = 13,308,796,817.18
  5. Step 5: Solve for x
    x = 13,308,796,817.18/120,382.79
  6. Step 6: Final answer
    x = 110,553.98

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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.