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Finding the Fourth Proportional to 159,690, 239,528.52 and 47,365.68

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Solution

The fourth proportional to 159,690, 239,528.52 and 47,365.68 is: 71,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,690 : 239,528.52 = 47,365.68 : x
  2. Step 2: Convert to fraction form
    159,690/239,528.52 = 47,365.68/x
  3. Step 3: Cross multiply
    159,690x = 239,528.52 × 47,365.68
  4. Step 4: Simplify right side
    159,690x = 11,345,431,229.19
  5. Step 5: Solve for x
    x = 11,345,431,229.19/159,690
  6. Step 6: Final answer
    x = 71,046.60

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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.