Home / 120,355.20-166,092.77-65,909.66

Finding the Fourth Proportional to 120,355.20, 166,092.77 and 65,909.66

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Solution

The fourth proportional to 120,355.20, 166,092.77 and 65,909.66 is: 90,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,355.20 : 166,092.77 = 65,909.66 : x
  2. Step 2: Convert to fraction form
    120,355.20/166,092.77 = 65,909.66/x
  3. Step 3: Cross multiply
    120,355.20x = 166,092.77 × 65,909.66
  4. Step 4: Simplify right side
    120,355.20x = 10,947,117,333.47
  5. Step 5: Solve for x
    x = 10,947,117,333.47/120,355.20
  6. Step 6: Final answer
    x = 90,956.75

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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.