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Finding the Fourth Proportional to 109,471.62, 163,946.79 and 69,906.18

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Solution

The fourth proportional to 109,471.62, 163,946.79 and 69,906.18 is: 104,692.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,471.62 : 163,946.79 = 69,906.18 : x
  2. Step 2: Convert to fraction form
    109,471.62/163,946.79 = 69,906.18/x
  3. Step 3: Cross multiply
    109,471.62x = 163,946.79 × 69,906.18
  4. Step 4: Simplify right side
    109,471.62x = 11,460,893,812.16
  5. Step 5: Solve for x
    x = 11,460,893,812.16/109,471.62
  6. Step 6: Final answer
    x = 104,692.83

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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.