Home / 149,773.48-206,679.70-81,777.36

Finding the Fourth Proportional to 149,773.48, 206,679.70 and 81,777.36

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Solution

The fourth proportional to 149,773.48, 206,679.70 and 81,777.36 is: 112,848.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,773.48 : 206,679.70 = 81,777.36 : x
  2. Step 2: Convert to fraction form
    149,773.48/206,679.70 = 81,777.36/x
  3. Step 3: Cross multiply
    149,773.48x = 206,679.70 × 81,777.36
  4. Step 4: Simplify right side
    149,773.48x = 16,901,718,789.31
  5. Step 5: Solve for x
    x = 16,901,718,789.31/149,773.48
  6. Step 6: Final answer
    x = 112,848.54

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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.