Home / 87,859.36-132,478.27-80,511.04

Finding the Fourth Proportional to 87,859.36, 132,478.27 and 80,511.04

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Solution

The fourth proportional to 87,859.36, 132,478.27 and 80,511.04 is: 121,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859.36 : 132,478.27 = 80,511.04 : x
  2. Step 2: Convert to fraction form
    87,859.36/132,478.27 = 80,511.04/x
  3. Step 3: Cross multiply
    87,859.36x = 132,478.27 × 80,511.04
  4. Step 4: Simplify right side
    87,859.36x = 10,665,963,295.10
  5. Step 5: Solve for x
    x = 10,665,963,295.10/87,859.36
  6. Step 6: Final answer
    x = 121,398.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.