Home / 205,524.12-308,117.70-79,138.20

Finding the Fourth Proportional to 205,524.12, 308,117.70 and 79,138.20

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Solution

The fourth proportional to 205,524.12, 308,117.70 and 79,138.20 is: 118,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,524.12 : 308,117.70 = 79,138.20 : x
  2. Step 2: Convert to fraction form
    205,524.12/308,117.70 = 79,138.20/x
  3. Step 3: Cross multiply
    205,524.12x = 308,117.70 × 79,138.20
  4. Step 4: Simplify right side
    205,524.12x = 24,383,880,166.14
  5. Step 5: Solve for x
    x = 24,383,880,166.14/205,524.12
  6. Step 6: Final answer
    x = 118,642.43

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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.