Home / 149,355.54-206,108.75-81,375.35

Finding the Fourth Proportional to 149,355.54, 206,108.75 and 81,375.35

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Solution

The fourth proportional to 149,355.54, 206,108.75 and 81,375.35 is: 112,296.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,355.54 : 206,108.75 = 81,375.35 : x
  2. Step 2: Convert to fraction form
    149,355.54/206,108.75 = 81,375.35/x
  3. Step 3: Cross multiply
    149,355.54x = 206,108.75 × 81,375.35
  4. Step 4: Simplify right side
    149,355.54x = 16,772,170,842.21
  5. Step 5: Solve for x
    x = 16,772,170,842.21/149,355.54
  6. Step 6: Final answer
    x = 112,296.94

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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.