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Finding the Fourth Proportional to 101,218.81, 151,920.35 and 53,873.65

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Solution

The fourth proportional to 101,218.81, 151,920.35 and 53,873.65 is: 80,859.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,218.81 : 151,920.35 = 53,873.65 : x
  2. Step 2: Convert to fraction form
    101,218.81/151,920.35 = 53,873.65/x
  3. Step 3: Cross multiply
    101,218.81x = 151,920.35 × 53,873.65
  4. Step 4: Simplify right side
    101,218.81x = 8,184,503,763.78
  5. Step 5: Solve for x
    x = 8,184,503,763.78/101,218.81
  6. Step 6: Final answer
    x = 80,859.51

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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.