Home / 149,007.20-205,628.83-81,024.22

Finding the Fourth Proportional to 149,007.20, 205,628.83 and 81,024.22

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Solution

The fourth proportional to 149,007.20, 205,628.83 and 81,024.22 is: 111,812.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,007.20 : 205,628.83 = 81,024.22 : x
  2. Step 2: Convert to fraction form
    149,007.20/205,628.83 = 81,024.22/x
  3. Step 3: Cross multiply
    149,007.20x = 205,628.83 × 81,024.22
  4. Step 4: Simplify right side
    149,007.20x = 16,660,914,127.00
  5. Step 5: Solve for x
    x = 16,660,914,127.00/149,007.20
  6. Step 6: Final answer
    x = 111,812.81

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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.