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Finding the Fourth Proportional to 161,942.80, 242,856.60 and 73,238.80

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Solution

The fourth proportional to 161,942.80, 242,856.60 and 73,238.80 is: 109,832.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,942.80 : 242,856.60 = 73,238.80 : x
  2. Step 2: Convert to fraction form
    161,942.80/242,856.60 = 73,238.80/x
  3. Step 3: Cross multiply
    161,942.80x = 242,856.60 × 73,238.80
  4. Step 4: Simplify right side
    161,942.80x = 17,786,525,956.08
  5. Step 5: Solve for x
    x = 17,786,525,956.08/161,942.80
  6. Step 6: Final answer
    x = 109,832.15

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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.