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Finding the Fourth Proportional to 105,722.80, 158,584.20 and 53,234.80

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Solution

The fourth proportional to 105,722.80, 158,584.20 and 53,234.80 is: 79,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,722.80 : 158,584.20 = 53,234.80 : x
  2. Step 2: Convert to fraction form
    105,722.80/158,584.20 = 53,234.80/x
  3. Step 3: Cross multiply
    105,722.80x = 158,584.20 × 53,234.80
  4. Step 4: Simplify right side
    105,722.80x = 8,442,198,170.16
  5. Step 5: Solve for x
    x = 8,442,198,170.16/105,722.80
  6. Step 6: Final answer
    x = 79,852.20

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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.