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Finding the Fourth Proportional to 136,717.44, 205,074.88 and 43,223.20

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Solution

The fourth proportional to 136,717.44, 205,074.88 and 43,223.20 is: 64,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.44 : 205,074.88 = 43,223.20 : x
  2. Step 2: Convert to fraction form
    136,717.44/205,074.88 = 43,223.20/x
  3. Step 3: Cross multiply
    136,717.44x = 205,074.88 × 43,223.20
  4. Step 4: Simplify right side
    136,717.44x = 8,863,992,553.22
  5. Step 5: Solve for x
    x = 8,863,992,553.22/136,717.44
  6. Step 6: Final answer
    x = 64,834.40

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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.