Home / 231,100.59-318,889.50-135,572.43

Finding the Fourth Proportional to 231,100.59, 318,889.50 and 135,572.43

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Solution

The fourth proportional to 231,100.59, 318,889.50 and 135,572.43 is: 187,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,100.59 : 318,889.50 = 135,572.43 : x
  2. Step 2: Convert to fraction form
    231,100.59/318,889.50 = 135,572.43/x
  3. Step 3: Cross multiply
    231,100.59x = 318,889.50 × 135,572.43
  4. Step 4: Simplify right side
    231,100.59x = 43,232,624,416.49
  5. Step 5: Solve for x
    x = 43,232,624,416.49/231,100.59
  6. Step 6: Final answer
    x = 187,072.76

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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.