Home / 149,029.75-205,662.05-81,047.49

Finding the Fourth Proportional to 149,029.75, 205,662.05 and 81,047.49

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Solution

The fourth proportional to 149,029.75, 205,662.05 and 81,047.49 is: 111,846.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,029.75 : 205,662.05 = 81,047.49 : x
  2. Step 2: Convert to fraction form
    149,029.75/205,662.05 = 81,047.49/x
  3. Step 3: Cross multiply
    149,029.75x = 205,662.05 × 81,047.49
  4. Step 4: Simplify right side
    149,029.75x = 16,668,392,940.75
  5. Step 5: Solve for x
    x = 16,668,392,940.75/149,029.75
  6. Step 6: Final answer
    x = 111,846.08

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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.