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Finding the Fourth Proportional to 114,243.20, 171,364.80 and 72,252.80

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Solution

The fourth proportional to 114,243.20, 171,364.80 and 72,252.80 is: 108,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,243.20 : 171,364.80 = 72,252.80 : x
  2. Step 2: Convert to fraction form
    114,243.20/171,364.80 = 72,252.80/x
  3. Step 3: Cross multiply
    114,243.20x = 171,364.80 × 72,252.80
  4. Step 4: Simplify right side
    114,243.20x = 12,381,586,621.44
  5. Step 5: Solve for x
    x = 12,381,586,621.44/114,243.20
  6. Step 6: Final answer
    x = 108,379.20

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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.