Home / 136,734.28-188,413.06-100,867.40

Finding the Fourth Proportional to 136,734.28, 188,413.06 and 100,867.40

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Solution

The fourth proportional to 136,734.28, 188,413.06 and 100,867.40 is: 138,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,734.28 : 188,413.06 = 100,867.40 : x
  2. Step 2: Convert to fraction form
    136,734.28/188,413.06 = 100,867.40/x
  3. Step 3: Cross multiply
    136,734.28x = 188,413.06 × 100,867.40
  4. Step 4: Simplify right side
    136,734.28x = 19,004,735,488.24
  5. Step 5: Solve for x
    x = 19,004,735,488.24/136,734.28
  6. Step 6: Final answer
    x = 138,990.28

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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.