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Finding the Fourth Proportional to 128,366.71, 192,493.83 and 60,917.96

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Solution

The fourth proportional to 128,366.71, 192,493.83 and 60,917.96 is: 91,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,366.71 : 192,493.83 = 60,917.96 : x
  2. Step 2: Convert to fraction form
    128,366.71/192,493.83 = 60,917.96/x
  3. Step 3: Cross multiply
    128,366.71x = 192,493.83 × 60,917.96
  4. Step 4: Simplify right side
    128,366.71x = 11,726,331,436.19
  5. Step 5: Solve for x
    x = 11,726,331,436.19/128,366.71
  6. Step 6: Final answer
    x = 91,350.25

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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.