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Finding the Fourth Proportional to 83,373.52, 115,121.81 and 76,997.77

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Solution

The fourth proportional to 83,373.52, 115,121.81 and 76,997.77 is: 106,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,373.52 : 115,121.81 = 76,997.77 : x
  2. Step 2: Convert to fraction form
    83,373.52/115,121.81 = 76,997.77/x
  3. Step 3: Cross multiply
    83,373.52x = 115,121.81 × 76,997.77
  4. Step 4: Simplify right side
    83,373.52x = 8,864,122,648.36
  5. Step 5: Solve for x
    x = 8,864,122,648.36/83,373.52
  6. Step 6: Final answer
    x = 106,318.20

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1.5x scale

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.