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Finding the Fourth Proportional to 206,723.80, 310,085.70 and 73,754.20

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Solution

The fourth proportional to 206,723.80, 310,085.70 and 73,754.20 is: 110,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,723.80 : 310,085.70 = 73,754.20 : x
  2. Step 2: Convert to fraction form
    206,723.80/310,085.70 = 73,754.20/x
  3. Step 3: Cross multiply
    206,723.80x = 310,085.70 × 73,754.20
  4. Step 4: Simplify right side
    206,723.80x = 22,870,122,734.94
  5. Step 5: Solve for x
    x = 22,870,122,734.94/206,723.80
  6. Step 6: Final answer
    x = 110,631.30

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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.