Home / 120,855.33-166,800.33-100,680.26

Finding the Fourth Proportional to 120,855.33, 166,800.33 and 100,680.26

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Solution

The fourth proportional to 120,855.33, 166,800.33 and 100,680.26 is: 138,955.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,855.33 : 166,800.33 = 100,680.26 : x
  2. Step 2: Convert to fraction form
    120,855.33/166,800.33 = 100,680.26/x
  3. Step 3: Cross multiply
    120,855.33x = 166,800.33 × 100,680.26
  4. Step 4: Simplify right side
    120,855.33x = 16,793,499,758.48
  5. Step 5: Solve for x
    x = 16,793,499,758.48/120,855.33
  6. Step 6: Final answer
    x = 138,955.39

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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.