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Finding the Fourth Proportional to 159,413.94, 219,991.14 and 87,793.74

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Solution

The fourth proportional to 159,413.94, 219,991.14 and 87,793.74 is: 121,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,413.94 : 219,991.14 = 87,793.74 : x
  2. Step 2: Convert to fraction form
    159,413.94/219,991.14 = 87,793.74/x
  3. Step 3: Cross multiply
    159,413.94x = 219,991.14 × 87,793.74
  4. Step 4: Simplify right side
    159,413.94x = 19,313,844,947.46
  5. Step 5: Solve for x
    x = 19,313,844,947.46/159,413.94
  6. Step 6: Final answer
    x = 121,155.31

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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.