Home / 126,670.98-189,912.09-42,381.30

Finding the Fourth Proportional to 126,670.98, 189,912.09 and 42,381.30

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Solution

The fourth proportional to 126,670.98, 189,912.09 and 42,381.30 is: 63,540.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,670.98 : 189,912.09 = 42,381.30 : x
  2. Step 2: Convert to fraction form
    126,670.98/189,912.09 = 42,381.30/x
  3. Step 3: Cross multiply
    126,670.98x = 189,912.09 × 42,381.30
  4. Step 4: Simplify right side
    126,670.98x = 8,048,721,259.92
  5. Step 5: Solve for x
    x = 8,048,721,259.92/126,670.98
  6. Step 6: Final answer
    x = 63,540.37

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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.