Home / 186,869.40-280,217.70-81,634.20

Finding the Fourth Proportional to 186,869.40, 280,217.70 and 81,634.20

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Solution

The fourth proportional to 186,869.40, 280,217.70 and 81,634.20 is: 122,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,869.40 : 280,217.70 = 81,634.20 : x
  2. Step 2: Convert to fraction form
    186,869.40/280,217.70 = 81,634.20/x
  3. Step 3: Cross multiply
    186,869.40x = 280,217.70 × 81,634.20
  4. Step 4: Simplify right side
    186,869.40x = 22,875,347,765.34
  5. Step 5: Solve for x
    x = 22,875,347,765.34/186,869.40
  6. Step 6: Final answer
    x = 122,413.56

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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.