Home / 149,431.41-206,215.50-81,448.44

Finding the Fourth Proportional to 149,431.41, 206,215.50 and 81,448.44

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Solution

The fourth proportional to 149,431.41, 206,215.50 and 81,448.44 is: 112,398.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,431.41 : 206,215.50 = 81,448.44 : x
  2. Step 2: Convert to fraction form
    149,431.41/206,215.50 = 81,448.44/x
  3. Step 3: Cross multiply
    149,431.41x = 206,215.50 × 81,448.44
  4. Step 4: Simplify right side
    149,431.41x = 16,795,930,778.82
  5. Step 5: Solve for x
    x = 16,795,930,778.82/149,431.41
  6. Step 6: Final answer
    x = 112,398.93

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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.