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Finding the Fourth Proportional to 68,753.01, 103,129.61 and 18,833.55

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Solution

The fourth proportional to 68,753.01, 103,129.61 and 18,833.55 is: 28,250.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.01 : 103,129.61 = 18,833.55 : x
  2. Step 2: Convert to fraction form
    68,753.01/103,129.61 = 18,833.55/x
  3. Step 3: Cross multiply
    68,753.01x = 103,129.61 × 18,833.55
  4. Step 4: Simplify right side
    68,753.01x = 1,942,296,185.51
  5. Step 5: Solve for x
    x = 1,942,296,185.51/68,753.01
  6. Step 6: Final answer
    x = 28,250.34

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1.5x scale

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.