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Finding the Fourth Proportional to 120,893.84, 166,779.72 and 80,568.24

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Solution

The fourth proportional to 120,893.84, 166,779.72 and 80,568.24 is: 111,148.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,893.84 : 166,779.72 = 80,568.24 : x
  2. Step 2: Convert to fraction form
    120,893.84/166,779.72 = 80,568.24/x
  3. Step 3: Cross multiply
    120,893.84x = 166,779.72 × 80,568.24
  4. Step 4: Simplify right side
    120,893.84x = 13,437,148,508.09
  5. Step 5: Solve for x
    x = 13,437,148,508.09/120,893.84
  6. Step 6: Final answer
    x = 111,148.33

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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.