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Finding the Fourth Proportional to 101,905.20, 152,857.80 and 28,033.20

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Solution

The fourth proportional to 101,905.20, 152,857.80 and 28,033.20 is: 42,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,905.20 : 152,857.80 = 28,033.20 : x
  2. Step 2: Convert to fraction form
    101,905.20/152,857.80 = 28,033.20/x
  3. Step 3: Cross multiply
    101,905.20x = 152,857.80 × 28,033.20
  4. Step 4: Simplify right side
    101,905.20x = 4,285,093,278.96
  5. Step 5: Solve for x
    x = 4,285,093,278.96/101,905.20
  6. Step 6: Final answer
    x = 42,049.80

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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.