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Finding the Fourth Proportional to 109,409.34, 150,963.51 and 66,937.78

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Solution

The fourth proportional to 109,409.34, 150,963.51 and 66,937.78 is: 92,361.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,409.34 : 150,963.51 = 66,937.78 : x
  2. Step 2: Convert to fraction form
    109,409.34/150,963.51 = 66,937.78/x
  3. Step 3: Cross multiply
    109,409.34x = 150,963.51 × 66,937.78
  4. Step 4: Simplify right side
    109,409.34x = 10,105,162,220.41
  5. Step 5: Solve for x
    x = 10,105,162,220.41/109,409.34
  6. Step 6: Final answer
    x = 92,361.06

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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.