Home / 135,731.32-187,331.70-75,321.37

Finding the Fourth Proportional to 135,731.32, 187,331.70 and 75,321.37

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Solution

The fourth proportional to 135,731.32, 187,331.70 and 75,321.37 is: 103,955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,731.32 : 187,331.70 = 75,321.37 : x
  2. Step 2: Convert to fraction form
    135,731.32/187,331.70 = 75,321.37/x
  3. Step 3: Cross multiply
    135,731.32x = 187,331.70 × 75,321.37
  4. Step 4: Simplify right side
    135,731.32x = 14,110,079,540.07
  5. Step 5: Solve for x
    x = 14,110,079,540.07/135,731.32
  6. Step 6: Final answer
    x = 103,955.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.