Home / 149,398.51-206,169.94-81,415.46

Finding the Fourth Proportional to 149,398.51, 206,169.94 and 81,415.46

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Solution

The fourth proportional to 149,398.51, 206,169.94 and 81,415.46 is: 112,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,398.51 : 206,169.94 = 81,415.46 : x
  2. Step 2: Convert to fraction form
    149,398.51/206,169.94 = 81,415.46/x
  3. Step 3: Cross multiply
    149,398.51x = 206,169.94 × 81,415.46
  4. Step 4: Simplify right side
    149,398.51x = 16,785,419,472.42
  5. Step 5: Solve for x
    x = 16,785,419,472.42/149,398.51
  6. Step 6: Final answer
    x = 112,353.33

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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.