Home / 205,481.16-307,748.70-105,395.40

Finding the Fourth Proportional to 205,481.16, 307,748.70 and 105,395.40

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Solution

The fourth proportional to 205,481.16, 307,748.70 and 105,395.40 is: 157,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,481.16 : 307,748.70 = 105,395.40 : x
  2. Step 2: Convert to fraction form
    205,481.16/307,748.70 = 105,395.40/x
  3. Step 3: Cross multiply
    205,481.16x = 307,748.70 × 105,395.40
  4. Step 4: Simplify right side
    205,481.16x = 32,435,297,335.98
  5. Step 5: Solve for x
    x = 32,435,297,335.98/205,481.16
  6. Step 6: Final answer
    x = 157,850.47

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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.