Home / 120,776.94-180,990.45-68,074.29

Finding the Fourth Proportional to 120,776.94, 180,990.45 and 68,074.29

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Solution

The fourth proportional to 120,776.94, 180,990.45 and 68,074.29 is: 102,012.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,776.94 : 180,990.45 = 68,074.29 : x
  2. Step 2: Convert to fraction form
    120,776.94/180,990.45 = 68,074.29/x
  3. Step 3: Cross multiply
    120,776.94x = 180,990.45 × 68,074.29
  4. Step 4: Simplify right side
    120,776.94x = 12,320,796,380.53
  5. Step 5: Solve for x
    x = 12,320,796,380.53/120,776.94
  6. Step 6: Final answer
    x = 102,012.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.