Home / 87,394.10-130,857.87-76,896.50

Finding the Fourth Proportional to 87,394.10, 130,857.87 and 76,896.50

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Solution

The fourth proportional to 87,394.10, 130,857.87 and 76,896.50 is: 115,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,394.10 : 130,857.87 = 76,896.50 : x
  2. Step 2: Convert to fraction form
    87,394.10/130,857.87 = 76,896.50/x
  3. Step 3: Cross multiply
    87,394.10x = 130,857.87 × 76,896.50
  4. Step 4: Simplify right side
    87,394.10x = 10,062,512,200.46
  5. Step 5: Solve for x
    x = 10,062,512,200.46/87,394.10
  6. Step 6: Final answer
    x = 115,139.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.