Home / 135,810.29-187,414.62-75,380.78

Finding the Fourth Proportional to 135,810.29, 187,414.62 and 75,380.78

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Solution

The fourth proportional to 135,810.29, 187,414.62 and 75,380.78 is: 104,023.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,810.29 : 187,414.62 = 75,380.78 : x
  2. Step 2: Convert to fraction form
    135,810.29/187,414.62 = 75,380.78/x
  3. Step 3: Cross multiply
    135,810.29x = 187,414.62 × 75,380.78
  4. Step 4: Simplify right side
    135,810.29x = 14,127,460,239.00
  5. Step 5: Solve for x
    x = 14,127,460,239.00/135,810.29
  6. Step 6: Final answer
    x = 104,023.49

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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.