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Finding the Fourth Proportional to 159,856.40, 239,784.60 and 112,163.60

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Solution

The fourth proportional to 159,856.40, 239,784.60 and 112,163.60 is: 168,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,856.40 : 239,784.60 = 112,163.60 : x
  2. Step 2: Convert to fraction form
    159,856.40/239,784.60 = 112,163.60/x
  3. Step 3: Cross multiply
    159,856.40x = 239,784.60 × 112,163.60
  4. Step 4: Simplify right side
    159,856.40x = 26,895,103,960.56
  5. Step 5: Solve for x
    x = 26,895,103,960.56/159,856.40
  6. Step 6: Final answer
    x = 168,245.40

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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.