Home / 120,219.66-166,045.14-90,136.26

Finding the Fourth Proportional to 120,219.66, 166,045.14 and 90,136.26

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Solution

The fourth proportional to 120,219.66, 166,045.14 and 90,136.26 is: 124,494.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,219.66 : 166,045.14 = 90,136.26 : x
  2. Step 2: Convert to fraction form
    120,219.66/166,045.14 = 90,136.26/x
  3. Step 3: Cross multiply
    120,219.66x = 166,045.14 × 90,136.26
  4. Step 4: Simplify right side
    120,219.66x = 14,966,687,910.78
  5. Step 5: Solve for x
    x = 14,966,687,910.78/120,219.66
  6. Step 6: Final answer
    x = 124,494.51

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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.