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Finding the Fourth Proportional to 163,712.17, 245,662.41 and 68,934.88

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Solution

The fourth proportional to 163,712.17, 245,662.41 and 68,934.88 is: 103,441.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,712.17 : 245,662.41 = 68,934.88 : x
  2. Step 2: Convert to fraction form
    163,712.17/245,662.41 = 68,934.88/x
  3. Step 3: Cross multiply
    163,712.17x = 245,662.41 × 68,934.88
  4. Step 4: Simplify right side
    163,712.17x = 16,934,707,525.55
  5. Step 5: Solve for x
    x = 16,934,707,525.55/163,712.17
  6. Step 6: Final answer
    x = 103,441.96

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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.