Home / 135,541.38-187,042.08-78,183.07

Finding the Fourth Proportional to 135,541.38, 187,042.08 and 78,183.07

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Solution

The fourth proportional to 135,541.38, 187,042.08 and 78,183.07 is: 107,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,541.38 : 187,042.08 = 78,183.07 : x
  2. Step 2: Convert to fraction form
    135,541.38/187,042.08 = 78,183.07/x
  3. Step 3: Cross multiply
    135,541.38x = 187,042.08 × 78,183.07
  4. Step 4: Simplify right side
    135,541.38x = 14,623,524,033.59
  5. Step 5: Solve for x
    x = 14,623,524,033.59/135,541.38
  6. Step 6: Final answer
    x = 107,889.74

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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.