Home / 149,777.76-206,693.68-81,795.28

Finding the Fourth Proportional to 149,777.76, 206,693.68 and 81,795.28

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Solution

The fourth proportional to 149,777.76, 206,693.68 and 81,795.28 is: 112,877.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,777.76 : 206,693.68 = 81,795.28 : x
  2. Step 2: Convert to fraction form
    149,777.76/206,693.68 = 81,795.28/x
  3. Step 3: Cross multiply
    149,777.76x = 206,693.68 × 81,795.28
  4. Step 4: Simplify right side
    149,777.76x = 16,906,567,429.83
  5. Step 5: Solve for x
    x = 16,906,567,429.83/149,777.76
  6. Step 6: Final answer
    x = 112,877.69

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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.