Home / 86,944.20-130,124.70-76,446.60

Finding the Fourth Proportional to 86,944.20, 130,124.70 and 76,446.60

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Solution

The fourth proportional to 86,944.20, 130,124.70 and 76,446.60 is: 114,413.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,944.20 : 130,124.70 = 76,446.60 : x
  2. Step 2: Convert to fraction form
    86,944.20/130,124.70 = 76,446.60/x
  3. Step 3: Cross multiply
    86,944.20x = 130,124.70 × 76,446.60
  4. Step 4: Simplify right side
    86,944.20x = 9,947,590,891.02
  5. Step 5: Solve for x
    x = 9,947,590,891.02/86,944.20
  6. Step 6: Final answer
    x = 114,413.51

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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.