Home / 111,917.80-167,723.10-91,181.80

Finding the Fourth Proportional to 111,917.80, 167,723.10 and 91,181.80

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Solution

The fourth proportional to 111,917.80, 167,723.10 and 91,181.80 is: 136,647.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,917.80 : 167,723.10 = 91,181.80 : x
  2. Step 2: Convert to fraction form
    111,917.80/167,723.10 = 91,181.80/x
  3. Step 3: Cross multiply
    111,917.80x = 167,723.10 × 91,181.80
  4. Step 4: Simplify right side
    111,917.80x = 15,293,294,159.58
  5. Step 5: Solve for x
    x = 15,293,294,159.58/111,917.80
  6. Step 6: Final answer
    x = 136,647.56

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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.