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Finding the Fourth Proportional to 123,994.91, 171,102.02 and 68,805.61

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Solution

The fourth proportional to 123,994.91, 171,102.02 and 68,805.61 is: 94,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,994.91 : 171,102.02 = 68,805.61 : x
  2. Step 2: Convert to fraction form
    123,994.91/171,102.02 = 68,805.61/x
  3. Step 3: Cross multiply
    123,994.91x = 171,102.02 × 68,805.61
  4. Step 4: Simplify right side
    123,994.91x = 11,772,779,030.35
  5. Step 5: Solve for x
    x = 11,772,779,030.35/123,994.91
  6. Step 6: Final answer
    x = 94,945.67

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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.