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Finding the Fourth Proportional to 125,505, 173,197.08 and 68,920.20

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Solution

The fourth proportional to 125,505, 173,197.08 and 68,920.20 is: 95,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,505 : 173,197.08 = 68,920.20 : x
  2. Step 2: Convert to fraction form
    125,505/173,197.08 = 68,920.20/x
  3. Step 3: Cross multiply
    125,505x = 173,197.08 × 68,920.20
  4. Step 4: Simplify right side
    125,505x = 11,936,777,393.02
  5. Step 5: Solve for x
    x = 11,936,777,393.02/125,505
  6. Step 6: Final answer
    x = 95,109.97

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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.