Home / 120,868.20-181,302.30-107,389.80

Finding the Fourth Proportional to 120,868.20, 181,302.30 and 107,389.80

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Solution

The fourth proportional to 120,868.20, 181,302.30 and 107,389.80 is: 161,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,868.20 : 181,302.30 = 107,389.80 : x
  2. Step 2: Convert to fraction form
    120,868.20/181,302.30 = 107,389.80/x
  3. Step 3: Cross multiply
    120,868.20x = 181,302.30 × 107,389.80
  4. Step 4: Simplify right side
    120,868.20x = 19,470,017,736.54
  5. Step 5: Solve for x
    x = 19,470,017,736.54/120,868.20
  6. Step 6: Final answer
    x = 161,084.70

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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.