Home / 154,080.40-231,120.60-71,136.40

Finding the Fourth Proportional to 154,080.40, 231,120.60 and 71,136.40

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Solution

The fourth proportional to 154,080.40, 231,120.60 and 71,136.40 is: 106,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,080.40 : 231,120.60 = 71,136.40 : x
  2. Step 2: Convert to fraction form
    154,080.40/231,120.60 = 71,136.40/x
  3. Step 3: Cross multiply
    154,080.40x = 231,120.60 × 71,136.40
  4. Step 4: Simplify right side
    154,080.40x = 16,441,087,449.84
  5. Step 5: Solve for x
    x = 16,441,087,449.84/154,080.40
  6. Step 6: Final answer
    x = 106,704.60

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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.