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Finding the Fourth Proportional to 149,869.60, 224,739.60 and 74,960.80

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Solution

The fourth proportional to 149,869.60, 224,739.60 and 74,960.80 is: 112,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,869.60 : 224,739.60 = 74,960.80 : x
  2. Step 2: Convert to fraction form
    149,869.60/224,739.60 = 74,960.80/x
  3. Step 3: Cross multiply
    149,869.60x = 224,739.60 × 74,960.80
  4. Step 4: Simplify right side
    149,869.60x = 16,846,660,207.68
  5. Step 5: Solve for x
    x = 16,846,660,207.68/149,869.60
  6. Step 6: Final answer
    x = 112,408.79

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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.