Home / 154,478.20-231,803.70-65,716.60

Finding the Fourth Proportional to 154,478.20, 231,803.70 and 65,716.60

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Solution

The fourth proportional to 154,478.20, 231,803.70 and 65,716.60 is: 98,611.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,478.20 : 231,803.70 = 65,716.60 : x
  2. Step 2: Convert to fraction form
    154,478.20/231,803.70 = 65,716.60/x
  3. Step 3: Cross multiply
    154,478.20x = 231,803.70 × 65,716.60
  4. Step 4: Simplify right side
    154,478.20x = 15,233,351,031.42
  5. Step 5: Solve for x
    x = 15,233,351,031.42/154,478.20
  6. Step 6: Final answer
    x = 98,611.66

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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.