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Finding the Fourth Proportional to 159,636.80, 239,301.60 and 124,078.40

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Solution

The fourth proportional to 159,636.80, 239,301.60 and 124,078.40 is: 185,998.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,636.80 : 239,301.60 = 124,078.40 : x
  2. Step 2: Convert to fraction form
    159,636.80/239,301.60 = 124,078.40/x
  3. Step 3: Cross multiply
    159,636.80x = 239,301.60 × 124,078.40
  4. Step 4: Simplify right side
    159,636.80x = 29,692,159,645.44
  5. Step 5: Solve for x
    x = 29,692,159,645.44/159,636.80
  6. Step 6: Final answer
    x = 185,998.21

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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.