Home / 149,858.91-206,799.18-81,878.24

Finding the Fourth Proportional to 149,858.91, 206,799.18 and 81,878.24

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Solution

The fourth proportional to 149,858.91, 206,799.18 and 81,878.24 is: 112,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,858.91 : 206,799.18 = 81,878.24 : x
  2. Step 2: Convert to fraction form
    149,858.91/206,799.18 = 81,878.24/x
  3. Step 3: Cross multiply
    149,858.91x = 206,799.18 × 81,878.24
  4. Step 4: Simplify right side
    149,858.91x = 16,932,353,101.80
  5. Step 5: Solve for x
    x = 16,932,353,101.80/149,858.91
  6. Step 6: Final answer
    x = 112,988.63

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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.