Home / 135,864.78-187,499.26-75,435.43

Finding the Fourth Proportional to 135,864.78, 187,499.26 and 75,435.43

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Solution

The fourth proportional to 135,864.78, 187,499.26 and 75,435.43 is: 104,104.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,864.78 : 187,499.26 = 75,435.43 : x
  2. Step 2: Convert to fraction form
    135,864.78/187,499.26 = 75,435.43/x
  3. Step 3: Cross multiply
    135,864.78x = 187,499.26 × 75,435.43
  4. Step 4: Simplify right side
    135,864.78x = 14,144,087,302.78
  5. Step 5: Solve for x
    x = 14,144,087,302.78/135,864.78
  6. Step 6: Final answer
    x = 104,104.15

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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.