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Finding the Fourth Proportional to 128,470.38, 192,706.38 and 34,976.94

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Solution

The fourth proportional to 128,470.38, 192,706.38 and 34,976.94 is: 52,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,470.38 : 192,706.38 = 34,976.94 : x
  2. Step 2: Convert to fraction form
    128,470.38/192,706.38 = 34,976.94/x
  3. Step 3: Cross multiply
    128,470.38x = 192,706.38 × 34,976.94
  4. Step 4: Simplify right side
    128,470.38x = 6,740,279,490.88
  5. Step 5: Solve for x
    x = 6,740,279,490.88/128,470.38
  6. Step 6: Final answer
    x = 52,465.63

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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.