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Finding the Fourth Proportional to 68,143.74, 102,208.42 and 18,228.88

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Solution

The fourth proportional to 68,143.74, 102,208.42 and 18,228.88 is: 27,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,143.74 : 102,208.42 = 18,228.88 : x
  2. Step 2: Convert to fraction form
    68,143.74/102,208.42 = 18,228.88/x
  3. Step 3: Cross multiply
    68,143.74x = 102,208.42 × 18,228.88
  4. Step 4: Simplify right side
    68,143.74x = 1,863,145,023.17
  5. Step 5: Solve for x
    x = 1,863,145,023.17/68,143.74
  6. Step 6: Final answer
    x = 27,341.40

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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.