Home / 149,195.12-205,889.16-82,127.12

Finding the Fourth Proportional to 149,195.12, 205,889.16 and 82,127.12

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Solution

The fourth proportional to 149,195.12, 205,889.16 and 82,127.12 is: 113,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,195.12 : 205,889.16 = 82,127.12 : x
  2. Step 2: Convert to fraction form
    149,195.12/205,889.16 = 82,127.12/x
  3. Step 3: Cross multiply
    149,195.12x = 205,889.16 × 82,127.12
  4. Step 4: Simplify right side
    149,195.12x = 16,909,083,750.02
  5. Step 5: Solve for x
    x = 16,909,083,750.02/149,195.12
  6. Step 6: Final answer
    x = 113,335.37

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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.