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Finding the Fourth Proportional to 159,578.81, 239,403.74 and 69,636.04

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Solution

The fourth proportional to 159,578.81, 239,403.74 and 69,636.04 is: 104,469.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,578.81 : 239,403.74 = 69,636.04 : x
  2. Step 2: Convert to fraction form
    159,578.81/239,403.74 = 69,636.04/x
  3. Step 3: Cross multiply
    159,578.81x = 239,403.74 × 69,636.04
  4. Step 4: Simplify right side
    159,578.81x = 16,671,127,468.10
  5. Step 5: Solve for x
    x = 16,671,127,468.10/159,578.81
  6. Step 6: Final answer
    x = 104,469.56

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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.