Home / 154,123.20-231,184.80-80,241.60

Finding the Fourth Proportional to 154,123.20, 231,184.80 and 80,241.60

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Solution

The fourth proportional to 154,123.20, 231,184.80 and 80,241.60 is: 120,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,123.20 : 231,184.80 = 80,241.60 : x
  2. Step 2: Convert to fraction form
    154,123.20/231,184.80 = 80,241.60/x
  3. Step 3: Cross multiply
    154,123.20x = 231,184.80 × 80,241.60
  4. Step 4: Simplify right side
    154,123.20x = 18,550,638,247.68
  5. Step 5: Solve for x
    x = 18,550,638,247.68/154,123.20
  6. Step 6: Final answer
    x = 120,362.40

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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.