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Finding the Fourth Proportional to 70,218.40, 105,327.60 and 67,496.80

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Solution

The fourth proportional to 70,218.40, 105,327.60 and 67,496.80 is: 101,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,218.40 : 105,327.60 = 67,496.80 : x
  2. Step 2: Convert to fraction form
    70,218.40/105,327.60 = 67,496.80/x
  3. Step 3: Cross multiply
    70,218.40x = 105,327.60 × 67,496.80
  4. Step 4: Simplify right side
    70,218.40x = 7,109,275,951.68
  5. Step 5: Solve for x
    x = 7,109,275,951.68/70,218.40
  6. Step 6: Final answer
    x = 101,245.20

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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.