Home / 154,127.20-231,190.80-80,245.60

Finding the Fourth Proportional to 154,127.20, 231,190.80 and 80,245.60

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Solution

The fourth proportional to 154,127.20, 231,190.80 and 80,245.60 is: 120,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,127.20 : 231,190.80 = 80,245.60 : x
  2. Step 2: Convert to fraction form
    154,127.20/231,190.80 = 80,245.60/x
  3. Step 3: Cross multiply
    154,127.20x = 231,190.80 × 80,245.60
  4. Step 4: Simplify right side
    154,127.20x = 18,552,044,460.48
  5. Step 5: Solve for x
    x = 18,552,044,460.48/154,127.20
  6. Step 6: Final answer
    x = 120,368.40

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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.