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Finding the Fourth Proportional to 114,020.20, 170,771.10 and 72,029.80

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Solution

The fourth proportional to 114,020.20, 170,771.10 and 72,029.80 is: 107,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,020.20 : 170,771.10 = 72,029.80 : x
  2. Step 2: Convert to fraction form
    114,020.20/170,771.10 = 72,029.80/x
  3. Step 3: Cross multiply
    114,020.20x = 170,771.10 × 72,029.80
  4. Step 4: Simplify right side
    114,020.20x = 12,300,608,178.78
  5. Step 5: Solve for x
    x = 12,300,608,178.78/114,020.20
  6. Step 6: Final answer
    x = 107,880.96

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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.