Home / 120,949.20-181,272.60-61,808.40

Finding the Fourth Proportional to 120,949.20, 181,272.60 and 61,808.40

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Solution

The fourth proportional to 120,949.20, 181,272.60 and 61,808.40 is: 92,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,949.20 : 181,272.60 = 61,808.40 : x
  2. Step 2: Convert to fraction form
    120,949.20/181,272.60 = 61,808.40/x
  3. Step 3: Cross multiply
    120,949.20x = 181,272.60 × 61,808.40
  4. Step 4: Simplify right side
    120,949.20x = 11,204,169,369.84
  5. Step 5: Solve for x
    x = 11,204,169,369.84/120,949.20
  6. Step 6: Final answer
    x = 92,635.33

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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.