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Finding the Fourth Proportional to 123,992.41, 171,109.63 and 67,403.78

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Solution

The fourth proportional to 123,992.41, 171,109.63 and 67,403.78 is: 93,017.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,992.41 : 171,109.63 = 67,403.78 : x
  2. Step 2: Convert to fraction form
    123,992.41/171,109.63 = 67,403.78/x
  3. Step 3: Cross multiply
    123,992.41x = 171,109.63 × 67,403.78
  4. Step 4: Simplify right side
    123,992.41x = 11,533,435,856.40
  5. Step 5: Solve for x
    x = 11,533,435,856.40/123,992.41
  6. Step 6: Final answer
    x = 93,017.27

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1.5x scale

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.