Home / 186,894.20-280,406.10-81,788.60

Finding the Fourth Proportional to 186,894.20, 280,406.10 and 81,788.60

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Solution

The fourth proportional to 186,894.20, 280,406.10 and 81,788.60 is: 122,711.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,894.20 : 280,406.10 = 81,788.60 : x
  2. Step 2: Convert to fraction form
    186,894.20/280,406.10 = 81,788.60/x
  3. Step 3: Cross multiply
    186,894.20x = 280,406.10 × 81,788.60
  4. Step 4: Simplify right side
    186,894.20x = 22,934,022,350.46
  5. Step 5: Solve for x
    x = 22,934,022,350.46/186,894.20
  6. Step 6: Final answer
    x = 122,711.26

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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.