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Finding the Fourth Proportional to 159,474.30, 239,211.45 and 138,738.30

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Solution

The fourth proportional to 159,474.30, 239,211.45 and 138,738.30 is: 208,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,474.30 : 239,211.45 = 138,738.30 : x
  2. Step 2: Convert to fraction form
    159,474.30/239,211.45 = 138,738.30/x
  3. Step 3: Cross multiply
    159,474.30x = 239,211.45 × 138,738.30
  4. Step 4: Simplify right side
    159,474.30x = 33,187,789,913.54
  5. Step 5: Solve for x
    x = 33,187,789,913.54/159,474.30
  6. Step 6: Final answer
    x = 208,107.45

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1.5x scale

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.