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Finding the Fourth Proportional to 120,805.98, 166,795.66 and 75,504.33

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Solution

The fourth proportional to 120,805.98, 166,795.66 and 75,504.33 is: 104,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,805.98 : 166,795.66 = 75,504.33 : x
  2. Step 2: Convert to fraction form
    120,805.98/166,795.66 = 75,504.33/x
  3. Step 3: Cross multiply
    120,805.98x = 166,795.66 × 75,504.33
  4. Step 4: Simplify right side
    120,805.98x = 12,593,794,555.21
  5. Step 5: Solve for x
    x = 12,593,794,555.21/120,805.98
  6. Step 6: Final answer
    x = 104,248.11

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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.