Home / 206,157.23-309,305.05-111,395.89

Finding the Fourth Proportional to 206,157.23, 309,305.05 and 111,395.89

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Solution

The fourth proportional to 206,157.23, 309,305.05 and 111,395.89 is: 167,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,157.23 : 309,305.05 = 111,395.89 : x
  2. Step 2: Convert to fraction form
    206,157.23/309,305.05 = 111,395.89/x
  3. Step 3: Cross multiply
    206,157.23x = 309,305.05 × 111,395.89
  4. Step 4: Simplify right side
    206,157.23x = 34,455,311,434.39
  5. Step 5: Solve for x
    x = 34,455,311,434.39/206,157.23
  6. Step 6: Final answer
    x = 167,131.23

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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.