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Finding the Fourth Proportional to 68,120.96, 102,186.54 and 18,199.94

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Solution

The fourth proportional to 68,120.96, 102,186.54 and 18,199.94 is: 27,301.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,120.96 : 102,186.54 = 18,199.94 : x
  2. Step 2: Convert to fraction form
    68,120.96/102,186.54 = 18,199.94/x
  3. Step 3: Cross multiply
    68,120.96x = 102,186.54 × 18,199.94
  4. Step 4: Simplify right side
    68,120.96x = 1,859,788,385.87
  5. Step 5: Solve for x
    x = 1,859,788,385.87/68,120.96
  6. Step 6: Final answer
    x = 27,301.27

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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.