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Finding the Fourth Proportional to 109,969.84, 151,756.44 and 66,933.76

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Solution

The fourth proportional to 109,969.84, 151,756.44 and 66,933.76 is: 92,367.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,969.84 : 151,756.44 = 66,933.76 : x
  2. Step 2: Convert to fraction form
    109,969.84/151,756.44 = 66,933.76/x
  3. Step 3: Cross multiply
    109,969.84x = 151,756.44 × 66,933.76
  4. Step 4: Simplify right side
    109,969.84x = 10,157,629,133.41
  5. Step 5: Solve for x
    x = 10,157,629,133.41/109,969.84
  6. Step 6: Final answer
    x = 92,367.41

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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.