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Finding the Fourth Proportional to 159,212.22, 219,744.26 and 91,274.80

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Solution

The fourth proportional to 159,212.22, 219,744.26 and 91,274.80 is: 125,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,212.22 : 219,744.26 = 91,274.80 : x
  2. Step 2: Convert to fraction form
    159,212.22/219,744.26 = 91,274.80/x
  3. Step 3: Cross multiply
    159,212.22x = 219,744.26 × 91,274.80
  4. Step 4: Simplify right side
    159,212.22x = 20,057,113,382.65
  5. Step 5: Solve for x
    x = 20,057,113,382.65/159,212.22
  6. Step 6: Final answer
    x = 125,977.22

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1.5x scale

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.