Home / 193,731.07-290,638.83-81,347.22

Finding the Fourth Proportional to 193,731.07, 290,638.83 and 81,347.22

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Solution

The fourth proportional to 193,731.07, 290,638.83 and 81,347.22 is: 122,038.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,731.07 : 290,638.83 = 81,347.22 : x
  2. Step 2: Convert to fraction form
    193,731.07/290,638.83 = 81,347.22/x
  3. Step 3: Cross multiply
    193,731.07x = 290,638.83 × 81,347.22
  4. Step 4: Simplify right side
    193,731.07x = 23,642,660,844.55
  5. Step 5: Solve for x
    x = 23,642,660,844.55/193,731.07
  6. Step 6: Final answer
    x = 122,038.56

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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.