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Finding the Fourth Proportional to 68,128.28, 102,832.29 and 68,128.28

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Solution

The fourth proportional to 68,128.28, 102,832.29 and 68,128.28 is: 102,832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.28 : 102,832.29 = 68,128.28 : x
  2. Step 2: Convert to fraction form
    68,128.28/102,832.29 = 68,128.28/x
  3. Step 3: Cross multiply
    68,128.28x = 102,832.29 × 68,128.28
  4. Step 4: Simplify right side
    68,128.28x = 7,005,787,046.16
  5. Step 5: Solve for x
    x = 7,005,787,046.16/68,128.28
  6. Step 6: Final answer
    x = 102,832.29

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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.