Home / 159,583.08-220,143.72-121,791.72

Finding the Fourth Proportional to 159,583.08, 220,143.72 and 121,791.72

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Solution

The fourth proportional to 159,583.08, 220,143.72 and 121,791.72 is: 168,010.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,583.08 : 220,143.72 = 121,791.72 : x
  2. Step 2: Convert to fraction form
    159,583.08/220,143.72 = 121,791.72/x
  3. Step 3: Cross multiply
    159,583.08x = 220,143.72 × 121,791.72
  4. Step 4: Simplify right side
    159,583.08x = 26,811,682,306.00
  5. Step 5: Solve for x
    x = 26,811,682,306.00/159,583.08
  6. Step 6: Final answer
    x = 168,010.81

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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.