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Finding the Fourth Proportional to 159,137.76, 238,815.12 and 84,254.88

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Solution

The fourth proportional to 159,137.76, 238,815.12 and 84,254.88 is: 126,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,137.76 : 238,815.12 = 84,254.88 : x
  2. Step 2: Convert to fraction form
    159,137.76/238,815.12 = 84,254.88/x
  3. Step 3: Cross multiply
    159,137.76x = 238,815.12 × 84,254.88
  4. Step 4: Simplify right side
    159,137.76x = 20,121,339,277.79
  5. Step 5: Solve for x
    x = 20,121,339,277.79/159,137.76
  6. Step 6: Final answer
    x = 126,439.75

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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.