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Finding the Fourth Proportional to 159,273.30, 219,791.57 and 87,651.48

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Solution

The fourth proportional to 159,273.30, 219,791.57 and 87,651.48 is: 120,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,273.30 : 219,791.57 = 87,651.48 : x
  2. Step 2: Convert to fraction form
    159,273.30/219,791.57 = 87,651.48/x
  3. Step 3: Cross multiply
    159,273.30x = 219,791.57 × 87,651.48
  4. Step 4: Simplify right side
    159,273.30x = 19,265,055,963.77
  5. Step 5: Solve for x
    x = 19,265,055,963.77/159,273.30
  6. Step 6: Final answer
    x = 120,955.97

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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.