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Finding the Fourth Proportional to 155,768.97, 214,960.89 and 84,148.77

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Solution

The fourth proportional to 155,768.97, 214,960.89 and 84,148.77 is: 116,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,768.97 : 214,960.89 = 84,148.77 : x
  2. Step 2: Convert to fraction form
    155,768.97/214,960.89 = 84,148.77/x
  3. Step 3: Cross multiply
    155,768.97x = 214,960.89 × 84,148.77
  4. Step 4: Simplify right side
    155,768.97x = 18,088,694,491.61
  5. Step 5: Solve for x
    x = 18,088,694,491.61/155,768.97
  6. Step 6: Final answer
    x = 116,125.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.