Home / 126,243.72-189,237.60-81,898.74

Finding the Fourth Proportional to 126,243.72, 189,237.60 and 81,898.74

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Solution

The fourth proportional to 126,243.72, 189,237.60 and 81,898.74 is: 122,765.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,243.72 : 189,237.60 = 81,898.74 : x
  2. Step 2: Convert to fraction form
    126,243.72/189,237.60 = 81,898.74/x
  3. Step 3: Cross multiply
    126,243.72x = 189,237.60 × 81,898.74
  4. Step 4: Simplify right side
    126,243.72x = 15,498,321,000.62
  5. Step 5: Solve for x
    x = 15,498,321,000.62/126,243.72
  6. Step 6: Final answer
    x = 122,765.08

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1.5x scale

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.