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Finding the Fourth Proportional to 109,340.43, 150,838.20 and 63,990.32

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Solution

The fourth proportional to 109,340.43, 150,838.20 and 63,990.32 is: 88,276.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,340.43 : 150,838.20 = 63,990.32 : x
  2. Step 2: Convert to fraction form
    109,340.43/150,838.20 = 63,990.32/x
  3. Step 3: Cross multiply
    109,340.43x = 150,838.20 × 63,990.32
  4. Step 4: Simplify right side
    109,340.43x = 9,652,183,932.03
  5. Step 5: Solve for x
    x = 9,652,183,932.03/109,340.43
  6. Step 6: Final answer
    x = 88,276.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.