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Finding the Fourth Proportional to 183,479.40, 274,959.90 and 135,721.80

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Solution

The fourth proportional to 183,479.40, 274,959.90 and 135,721.80 is: 203,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,479.40 : 274,959.90 = 135,721.80 : x
  2. Step 2: Convert to fraction form
    183,479.40/274,959.90 = 135,721.80/x
  3. Step 3: Cross multiply
    183,479.40x = 274,959.90 × 135,721.80
  4. Step 4: Simplify right side
    183,479.40x = 37,318,052,555.82
  5. Step 5: Solve for x
    x = 37,318,052,555.82/183,479.40
  6. Step 6: Final answer
    x = 203,390.97

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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.