Home / 193,549.72-290,436.68-81,220

Finding the Fourth Proportional to 193,549.72, 290,436.68 and 81,220

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Solution

The fourth proportional to 193,549.72, 290,436.68 and 81,220 is: 121,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,549.72 : 290,436.68 = 81,220 : x
  2. Step 2: Convert to fraction form
    193,549.72/290,436.68 = 81,220/x
  3. Step 3: Cross multiply
    193,549.72x = 290,436.68 × 81,220
  4. Step 4: Simplify right side
    193,549.72x = 23,589,267,149.60
  5. Step 5: Solve for x
    x = 23,589,267,149.60/193,549.72
  6. Step 6: Final answer
    x = 121,877.04

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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.