Home / 205,226.80-307,840.20-126,084.40

Finding the Fourth Proportional to 205,226.80, 307,840.20 and 126,084.40

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Solution

The fourth proportional to 205,226.80, 307,840.20 and 126,084.40 is: 189,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,226.80 : 307,840.20 = 126,084.40 : x
  2. Step 2: Convert to fraction form
    205,226.80/307,840.20 = 126,084.40/x
  3. Step 3: Cross multiply
    205,226.80x = 307,840.20 × 126,084.40
  4. Step 4: Simplify right side
    205,226.80x = 38,813,846,912.88
  5. Step 5: Solve for x
    x = 38,813,846,912.88/205,226.80
  6. Step 6: Final answer
    x = 189,126.60

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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.