Home / 120,520.94-166,320.29-66,806.87

Finding the Fourth Proportional to 120,520.94, 166,320.29 and 66,806.87

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Solution

The fourth proportional to 120,520.94, 166,320.29 and 66,806.87 is: 92,194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,520.94 : 166,320.29 = 66,806.87 : x
  2. Step 2: Convert to fraction form
    120,520.94/166,320.29 = 66,806.87/x
  3. Step 3: Cross multiply
    120,520.94x = 166,320.29 × 66,806.87
  4. Step 4: Simplify right side
    120,520.94x = 11,111,337,658.36
  5. Step 5: Solve for x
    x = 11,111,337,658.36/120,520.94
  6. Step 6: Final answer
    x = 92,194.25

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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.