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Finding the Fourth Proportional to 109,369.89, 163,684.44 and 67,276.74

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Solution

The fourth proportional to 109,369.89, 163,684.44 and 67,276.74 is: 100,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,369.89 : 163,684.44 = 67,276.74 : x
  2. Step 2: Convert to fraction form
    109,369.89/163,684.44 = 67,276.74/x
  3. Step 3: Cross multiply
    109,369.89x = 163,684.44 × 67,276.74
  4. Step 4: Simplify right side
    109,369.89x = 11,012,155,511.93
  5. Step 5: Solve for x
    x = 11,012,155,511.93/109,369.89
  6. Step 6: Final answer
    x = 100,687.27

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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.