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Finding the Fourth Proportional to 70,204.20, 105,306.30 and 66,923.70

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Solution

The fourth proportional to 70,204.20, 105,306.30 and 66,923.70 is: 100,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,204.20 : 105,306.30 = 66,923.70 : x
  2. Step 2: Convert to fraction form
    70,204.20/105,306.30 = 66,923.70/x
  3. Step 3: Cross multiply
    70,204.20x = 105,306.30 × 66,923.70
  4. Step 4: Simplify right side
    70,204.20x = 7,047,487,229.31
  5. Step 5: Solve for x
    x = 7,047,487,229.31/70,204.20
  6. Step 6: Final answer
    x = 100,385.55

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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.