Home / 149,763.91-206,675.21-81,781.37

Finding the Fourth Proportional to 149,763.91, 206,675.21 and 81,781.37

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Solution

The fourth proportional to 149,763.91, 206,675.21 and 81,781.37 is: 112,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,763.91 : 206,675.21 = 81,781.37 : x
  2. Step 2: Convert to fraction form
    149,763.91/206,675.21 = 81,781.37/x
  3. Step 3: Cross multiply
    149,763.91x = 206,675.21 × 81,781.37
  4. Step 4: Simplify right side
    149,763.91x = 16,902,181,409.93
  5. Step 5: Solve for x
    x = 16,902,181,409.93/149,763.91
  6. Step 6: Final answer
    x = 112,858.85

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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.