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Finding the Fourth Proportional to 111,524.80, 167,288.16 and 28,418.72

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Solution

The fourth proportional to 111,524.80, 167,288.16 and 28,418.72 is: 42,628.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,524.80 : 167,288.16 = 28,418.72 : x
  2. Step 2: Convert to fraction form
    111,524.80/167,288.16 = 28,418.72/x
  3. Step 3: Cross multiply
    111,524.80x = 167,288.16 × 28,418.72
  4. Step 4: Simplify right side
    111,524.80x = 4,754,115,378.36
  5. Step 5: Solve for x
    x = 4,754,115,378.36/111,524.80
  6. Step 6: Final answer
    x = 42,628.32

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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.