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Finding the Fourth Proportional to 159,768.57, 239,636.45 and 84,809.15

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Solution

The fourth proportional to 159,768.57, 239,636.45 and 84,809.15 is: 127,205.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,768.57 : 239,636.45 = 84,809.15 : x
  2. Step 2: Convert to fraction form
    159,768.57/239,636.45 = 84,809.15/x
  3. Step 3: Cross multiply
    159,768.57x = 239,636.45 × 84,809.15
  4. Step 4: Simplify right side
    159,768.57x = 20,323,363,545.99
  5. Step 5: Solve for x
    x = 20,323,363,545.99/159,768.57
  6. Step 6: Final answer
    x = 127,205.01

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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.