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Finding the Fourth Proportional to 159,663.60, 239,581.80 and 70,930.80

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Solution

The fourth proportional to 159,663.60, 239,581.80 and 70,930.80 is: 106,434.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,663.60 : 239,581.80 = 70,930.80 : x
  2. Step 2: Convert to fraction form
    159,663.60/239,581.80 = 70,930.80/x
  3. Step 3: Cross multiply
    159,663.60x = 239,581.80 × 70,930.80
  4. Step 4: Simplify right side
    159,663.60x = 16,993,728,739.44
  5. Step 5: Solve for x
    x = 16,993,728,739.44/159,663.60
  6. Step 6: Final answer
    x = 106,434.58

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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.