Home / 193,720.70-290,534.78-81,403.04

Finding the Fourth Proportional to 193,720.70, 290,534.78 and 81,403.04

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Solution

The fourth proportional to 193,720.70, 290,534.78 and 81,403.04 is: 122,085.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,720.70 : 290,534.78 = 81,403.04 : x
  2. Step 2: Convert to fraction form
    193,720.70/290,534.78 = 81,403.04/x
  3. Step 3: Cross multiply
    193,720.70x = 290,534.78 × 81,403.04
  4. Step 4: Simplify right side
    193,720.70x = 23,650,414,317.73
  5. Step 5: Solve for x
    x = 23,650,414,317.73/193,720.70
  6. Step 6: Final answer
    x = 122,085.12

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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.