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Finding the Fourth Proportional to 161,550.57, 242,375.31 and 82,720.56

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Solution

The fourth proportional to 161,550.57, 242,375.31 and 82,720.56 is: 124,106.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,550.57 : 242,375.31 = 82,720.56 : x
  2. Step 2: Convert to fraction form
    161,550.57/242,375.31 = 82,720.56/x
  3. Step 3: Cross multiply
    161,550.57x = 242,375.31 × 82,720.56
  4. Step 4: Simplify right side
    161,550.57x = 20,049,421,373.37
  5. Step 5: Solve for x
    x = 20,049,421,373.37/161,550.57
  6. Step 6: Final answer
    x = 124,106.16

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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.