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Finding the Fourth Proportional to 159,409.62, 219,744.90 and 131,066.10

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Solution

The fourth proportional to 159,409.62, 219,744.90 and 131,066.10 is: 180,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,409.62 : 219,744.90 = 131,066.10 : x
  2. Step 2: Convert to fraction form
    159,409.62/219,744.90 = 131,066.10/x
  3. Step 3: Cross multiply
    159,409.62x = 219,744.90 × 131,066.10
  4. Step 4: Simplify right side
    159,409.62x = 28,801,107,037.89
  5. Step 5: Solve for x
    x = 28,801,107,037.89/159,409.62
  6. Step 6: Final answer
    x = 180,673.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.