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Finding the Fourth Proportional to 109,346.74, 150,909.65 and 66,933.30

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Solution

The fourth proportional to 109,346.74, 150,909.65 and 66,933.30 is: 92,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,346.74 : 150,909.65 = 66,933.30 : x
  2. Step 2: Convert to fraction form
    109,346.74/150,909.65 = 66,933.30/x
  3. Step 3: Cross multiply
    109,346.74x = 150,909.65 × 66,933.30
  4. Step 4: Simplify right side
    109,346.74x = 10,100,880,876.35
  5. Step 5: Solve for x
    x = 10,100,880,876.35/109,346.74
  6. Step 6: Final answer
    x = 92,374.78

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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.