Home / 123,984.41-171,103.79-76,253.54

Finding the Fourth Proportional to 123,984.41, 171,103.79 and 76,253.54

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Solution

The fourth proportional to 123,984.41, 171,103.79 and 76,253.54 is: 105,233.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,984.41 : 171,103.79 = 76,253.54 : x
  2. Step 2: Convert to fraction form
    123,984.41/171,103.79 = 76,253.54/x
  3. Step 3: Cross multiply
    123,984.41x = 171,103.79 × 76,253.54
  4. Step 4: Simplify right side
    123,984.41x = 13,047,269,030.03
  5. Step 5: Solve for x
    x = 13,047,269,030.03/123,984.41
  6. Step 6: Final answer
    x = 105,233.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.