Home / 137,640.78-206,222.04-74,504.43

Finding the Fourth Proportional to 137,640.78, 206,222.04 and 74,504.43

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Solution

The fourth proportional to 137,640.78, 206,222.04 and 74,504.43 is: 111,627.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,640.78 : 206,222.04 = 74,504.43 : x
  2. Step 2: Convert to fraction form
    137,640.78/206,222.04 = 74,504.43/x
  3. Step 3: Cross multiply
    137,640.78x = 206,222.04 × 74,504.43
  4. Step 4: Simplify right side
    137,640.78x = 15,364,455,543.64
  5. Step 5: Solve for x
    x = 15,364,455,543.64/137,640.78
  6. Step 6: Final answer
    x = 111,627.20

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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.