Home / 154,405.20-231,316.20-79,269.60

Finding the Fourth Proportional to 154,405.20, 231,316.20 and 79,269.60

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Solution

The fourth proportional to 154,405.20, 231,316.20 and 79,269.60 is: 118,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,405.20 : 231,316.20 = 79,269.60 : x
  2. Step 2: Convert to fraction form
    154,405.20/231,316.20 = 79,269.60/x
  3. Step 3: Cross multiply
    154,405.20x = 231,316.20 × 79,269.60
  4. Step 4: Simplify right side
    154,405.20x = 18,336,342,647.52
  5. Step 5: Solve for x
    x = 18,336,342,647.52/154,405.20
  6. Step 6: Final answer
    x = 118,754.70

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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.