Home / 136,413.87-188,251.05-79,086.50

Finding the Fourth Proportional to 136,413.87, 188,251.05 and 79,086.50

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Solution

The fourth proportional to 136,413.87, 188,251.05 and 79,086.50 is: 109,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,413.87 : 188,251.05 = 79,086.50 : x
  2. Step 2: Convert to fraction form
    136,413.87/188,251.05 = 79,086.50/x
  3. Step 3: Cross multiply
    136,413.87x = 188,251.05 × 79,086.50
  4. Step 4: Simplify right side
    136,413.87x = 14,888,116,727.09
  5. Step 5: Solve for x
    x = 14,888,116,727.09/136,413.87
  6. Step 6: Final answer
    x = 109,139.32

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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.