Home / 120,380.16-166,178.96-77,422.08

Finding the Fourth Proportional to 120,380.16, 166,178.96 and 77,422.08

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Solution

The fourth proportional to 120,380.16, 166,178.96 and 77,422.08 is: 106,877.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,380.16 : 166,178.96 = 77,422.08 : x
  2. Step 2: Convert to fraction form
    120,380.16/166,178.96 = 77,422.08/x
  3. Step 3: Cross multiply
    120,380.16x = 166,178.96 × 77,422.08
  4. Step 4: Simplify right side
    120,380.16x = 12,865,920,735.44
  5. Step 5: Solve for x
    x = 12,865,920,735.44/120,380.16
  6. Step 6: Final answer
    x = 106,877.42

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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.