Home / 87,838.30-121,236.78-68,680.18

Finding the Fourth Proportional to 87,838.30, 121,236.78 and 68,680.18

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Solution

The fourth proportional to 87,838.30, 121,236.78 and 68,680.18 is: 94,794.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,838.30 : 121,236.78 = 68,680.18 : x
  2. Step 2: Convert to fraction form
    87,838.30/121,236.78 = 68,680.18/x
  3. Step 3: Cross multiply
    87,838.30x = 121,236.78 × 68,680.18
  4. Step 4: Simplify right side
    87,838.30x = 8,326,563,873.02
  5. Step 5: Solve for x
    x = 8,326,563,873.02/87,838.30
  6. Step 6: Final answer
    x = 94,794.23

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1.5x scale

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.