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Finding the Fourth Proportional to 120,750.25, 166,656.58 and 69,764.90

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Solution

The fourth proportional to 120,750.25, 166,656.58 and 69,764.90 is: 96,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,750.25 : 166,656.58 = 69,764.90 : x
  2. Step 2: Convert to fraction form
    120,750.25/166,656.58 = 69,764.90/x
  3. Step 3: Cross multiply
    120,750.25x = 166,656.58 × 69,764.90
  4. Step 4: Simplify right side
    120,750.25x = 11,626,779,638.04
  5. Step 5: Solve for x
    x = 11,626,779,638.04/120,750.25
  6. Step 6: Final answer
    x = 96,287.83

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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.