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Finding the Fourth Proportional to 122,721.80, 184,082.70 and 100,560.20

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Solution

The fourth proportional to 122,721.80, 184,082.70 and 100,560.20 is: 150,840.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,721.80 : 184,082.70 = 100,560.20 : x
  2. Step 2: Convert to fraction form
    122,721.80/184,082.70 = 100,560.20/x
  3. Step 3: Cross multiply
    122,721.80x = 184,082.70 × 100,560.20
  4. Step 4: Simplify right side
    122,721.80x = 18,511,393,128.54
  5. Step 5: Solve for x
    x = 18,511,393,128.54/122,721.80
  6. Step 6: Final answer
    x = 150,840.30

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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.