Home / 193,515.72-290,385.66-81,186

Finding the Fourth Proportional to 193,515.72, 290,385.66 and 81,186

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Solution

The fourth proportional to 193,515.72, 290,385.66 and 81,186 is: 121,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,515.72 : 290,385.66 = 81,186 : x
  2. Step 2: Convert to fraction form
    193,515.72/290,385.66 = 81,186/x
  3. Step 3: Cross multiply
    193,515.72x = 290,385.66 × 81,186
  4. Step 4: Simplify right side
    193,515.72x = 23,575,250,192.76
  5. Step 5: Solve for x
    x = 23,575,250,192.76/193,515.72
  6. Step 6: Final answer
    x = 121,826.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.