Home / 126,111.44-189,186.60-42,986

Finding the Fourth Proportional to 126,111.44, 189,186.60 and 42,986

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Solution

The fourth proportional to 126,111.44, 189,186.60 and 42,986 is: 64,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,111.44 : 189,186.60 = 42,986 : x
  2. Step 2: Convert to fraction form
    126,111.44/189,186.60 = 42,986/x
  3. Step 3: Cross multiply
    126,111.44x = 189,186.60 × 42,986
  4. Step 4: Simplify right side
    126,111.44x = 8,132,375,187.60
  5. Step 5: Solve for x
    x = 8,132,375,187.60/126,111.44
  6. Step 6: Final answer
    x = 64,485.63

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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.