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Finding the Fourth Proportional to 120,291.34, 165,995.45 and 68,600.84

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Solution

The fourth proportional to 120,291.34, 165,995.45 and 68,600.84 is: 94,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,291.34 : 165,995.45 = 68,600.84 : x
  2. Step 2: Convert to fraction form
    120,291.34/165,995.45 = 68,600.84/x
  3. Step 3: Cross multiply
    120,291.34x = 165,995.45 × 68,600.84
  4. Step 4: Simplify right side
    120,291.34x = 11,387,428,217.41
  5. Step 5: Solve for x
    x = 11,387,428,217.41/120,291.34
  6. Step 6: Final answer
    x = 94,665.41

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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.