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Finding the Fourth Proportional to 123,911.89, 170,996.30 and 67,322.86

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Solution

The fourth proportional to 123,911.89, 170,996.30 and 67,322.86 is: 92,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,911.89 : 170,996.30 = 67,322.86 : x
  2. Step 2: Convert to fraction form
    123,911.89/170,996.30 = 67,322.86/x
  3. Step 3: Cross multiply
    123,911.89x = 170,996.30 × 67,322.86
  4. Step 4: Simplify right side
    123,911.89x = 11,511,959,453.77
  5. Step 5: Solve for x
    x = 11,511,959,453.77/123,911.89
  6. Step 6: Final answer
    x = 92,904.40

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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.