Home / 193,812.02-290,422-81,430.80

Finding the Fourth Proportional to 193,812.02, 290,422 and 81,430.80

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Solution

The fourth proportional to 193,812.02, 290,422 and 81,430.80 is: 122,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,812.02 : 290,422 = 81,430.80 : x
  2. Step 2: Convert to fraction form
    193,812.02/290,422 = 81,430.80/x
  3. Step 3: Cross multiply
    193,812.02x = 290,422 × 81,430.80
  4. Step 4: Simplify right side
    193,812.02x = 23,649,295,797.60
  5. Step 5: Solve for x
    x = 23,649,295,797.60/193,812.02
  6. Step 6: Final answer
    x = 122,021.82

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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.