Home / 149,397.77-206,168.96-81,414.80

Finding the Fourth Proportional to 149,397.77, 206,168.96 and 81,414.80

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Solution

The fourth proportional to 149,397.77, 206,168.96 and 81,414.80 is: 112,352.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,397.77 : 206,168.96 = 81,414.80 : x
  2. Step 2: Convert to fraction form
    149,397.77/206,168.96 = 81,414.80/x
  3. Step 3: Cross multiply
    149,397.77x = 206,168.96 × 81,414.80
  4. Step 4: Simplify right side
    149,397.77x = 16,785,203,206.69
  5. Step 5: Solve for x
    x = 16,785,203,206.69/149,397.77
  6. Step 6: Final answer
    x = 112,352.44

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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.