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Finding the Fourth Proportional to 68,128.87, 102,833.22 and 68,128.87

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Solution

The fourth proportional to 68,128.87, 102,833.22 and 68,128.87 is: 102,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.87 : 102,833.22 = 68,128.87 : x
  2. Step 2: Convert to fraction form
    68,128.87/102,833.22 = 68,128.87/x
  3. Step 3: Cross multiply
    68,128.87x = 102,833.22 × 68,128.87
  4. Step 4: Simplify right side
    68,128.87x = 7,005,911,077.06
  5. Step 5: Solve for x
    x = 7,005,911,077.06/68,128.87
  6. Step 6: Final answer
    x = 102,833.22

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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.