Home / 81,414.87-121,911.99-56,192.22

Finding the Fourth Proportional to 81,414.87, 121,911.99 and 56,192.22

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Solution

The fourth proportional to 81,414.87, 121,911.99 and 56,192.22 is: 84,143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,414.87 : 121,911.99 = 56,192.22 : x
  2. Step 2: Convert to fraction form
    81,414.87/121,911.99 = 56,192.22/x
  3. Step 3: Cross multiply
    81,414.87x = 121,911.99 × 56,192.22
  4. Step 4: Simplify right side
    81,414.87x = 6,850,505,362.72
  5. Step 5: Solve for x
    x = 6,850,505,362.72/81,414.87
  6. Step 6: Final answer
    x = 84,143.17

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1.5x scale

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.