Home / 149,028.16-205,662.72-81,049.36

Finding the Fourth Proportional to 149,028.16, 205,662.72 and 81,049.36

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Solution

The fourth proportional to 149,028.16, 205,662.72 and 81,049.36 is: 111,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,028.16 : 205,662.72 = 81,049.36 : x
  2. Step 2: Convert to fraction form
    149,028.16/205,662.72 = 81,049.36/x
  3. Step 3: Cross multiply
    149,028.16x = 205,662.72 × 81,049.36
  4. Step 4: Simplify right side
    149,028.16x = 16,668,831,831.86
  5. Step 5: Solve for x
    x = 16,668,831,831.86/149,028.16
  6. Step 6: Final answer
    x = 111,850.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.