Home / 136,413.28-188,259.78-82,700.56

Finding the Fourth Proportional to 136,413.28, 188,259.78 and 82,700.56

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Solution

The fourth proportional to 136,413.28, 188,259.78 and 82,700.56 is: 114,132.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,413.28 : 188,259.78 = 82,700.56 : x
  2. Step 2: Convert to fraction form
    136,413.28/188,259.78 = 82,700.56/x
  3. Step 3: Cross multiply
    136,413.28x = 188,259.78 × 82,700.56
  4. Step 4: Simplify right side
    136,413.28x = 15,569,189,231.48
  5. Step 5: Solve for x
    x = 15,569,189,231.48/136,413.28
  6. Step 6: Final answer
    x = 114,132.50

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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.