Home / 120,863.07-166,737.38-80,537.49

Finding the Fourth Proportional to 120,863.07, 166,737.38 and 80,537.49

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Solution

The fourth proportional to 120,863.07, 166,737.38 and 80,537.49 is: 111,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,863.07 : 166,737.38 = 80,537.49 : x
  2. Step 2: Convert to fraction form
    120,863.07/166,737.38 = 80,537.49/x
  3. Step 3: Cross multiply
    120,863.07x = 166,737.38 × 80,537.49
  4. Step 4: Simplify right side
    120,863.07x = 13,428,609,671.69
  5. Step 5: Solve for x
    x = 13,428,609,671.69/120,863.07
  6. Step 6: Final answer
    x = 111,105.98

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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.