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Finding the Fourth Proportional to 140,722.80, 211,084.20 and 70,576.80

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Solution

The fourth proportional to 140,722.80, 211,084.20 and 70,576.80 is: 105,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,722.80 : 211,084.20 = 70,576.80 : x
  2. Step 2: Convert to fraction form
    140,722.80/211,084.20 = 70,576.80/x
  3. Step 3: Cross multiply
    140,722.80x = 211,084.20 × 70,576.80
  4. Step 4: Simplify right side
    140,722.80x = 14,897,647,366.56
  5. Step 5: Solve for x
    x = 14,897,647,366.56/140,722.80
  6. Step 6: Final answer
    x = 105,865.20

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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.