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Finding the Fourth Proportional to 155,744.33, 214,922.67 and 87,760.08

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Solution

The fourth proportional to 155,744.33, 214,922.67 and 87,760.08 is: 121,106.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,744.33 : 214,922.67 = 87,760.08 : x
  2. Step 2: Convert to fraction form
    155,744.33/214,922.67 = 87,760.08/x
  3. Step 3: Cross multiply
    155,744.33x = 214,922.67 × 87,760.08
  4. Step 4: Simplify right side
    155,744.33x = 18,861,630,713.01
  5. Step 5: Solve for x
    x = 18,861,630,713.01/155,744.33
  6. Step 6: Final answer
    x = 121,106.38

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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.