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Finding the Fourth Proportional to 159,137.28, 239,653.44 and 138,608.64

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Solution

The fourth proportional to 159,137.28, 239,653.44 and 138,608.64 is: 208,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,137.28 : 239,653.44 = 138,608.64 : x
  2. Step 2: Convert to fraction form
    159,137.28/239,653.44 = 138,608.64/x
  3. Step 3: Cross multiply
    159,137.28x = 239,653.44 × 138,608.64
  4. Step 4: Simplify right side
    159,137.28x = 33,218,037,389.72
  5. Step 5: Solve for x
    x = 33,218,037,389.72/159,137.28
  6. Step 6: Final answer
    x = 208,738.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.