Home / 138,816.10-207,932.55-76,413.70

Finding the Fourth Proportional to 138,816.10, 207,932.55 and 76,413.70

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Solution

The fourth proportional to 138,816.10, 207,932.55 and 76,413.70 is: 114,460.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,816.10 : 207,932.55 = 76,413.70 : x
  2. Step 2: Convert to fraction form
    138,816.10/207,932.55 = 76,413.70/x
  3. Step 3: Cross multiply
    138,816.10x = 207,932.55 × 76,413.70
  4. Step 4: Simplify right side
    138,816.10x = 15,888,895,495.94
  5. Step 5: Solve for x
    x = 15,888,895,495.94/138,816.10
  6. Step 6: Final answer
    x = 114,460.03

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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.