Home / 149,007.20-205,628.82-81,024.22

Finding the Fourth Proportional to 149,007.20, 205,628.82 and 81,024.22

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Solution

The fourth proportional to 149,007.20, 205,628.82 and 81,024.22 is: 111,812.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,007.20 : 205,628.82 = 81,024.22 : x
  2. Step 2: Convert to fraction form
    149,007.20/205,628.82 = 81,024.22/x
  3. Step 3: Cross multiply
    149,007.20x = 205,628.82 × 81,024.22
  4. Step 4: Simplify right side
    149,007.20x = 16,660,914,750.02
  5. Step 5: Solve for x
    x = 16,660,914,750.02/149,007.20
  6. Step 6: Final answer
    x = 111,812.82

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1.5x scale

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.