Home / 120,399.03-166,262.34-90,131.80

Finding the Fourth Proportional to 120,399.03, 166,262.34 and 90,131.80

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Solution

The fourth proportional to 120,399.03, 166,262.34 and 90,131.80 is: 124,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,399.03 : 166,262.34 = 90,131.80 : x
  2. Step 2: Convert to fraction form
    120,399.03/166,262.34 = 90,131.80/x
  3. Step 3: Cross multiply
    120,399.03x = 166,262.34 × 90,131.80
  4. Step 4: Simplify right side
    120,399.03x = 14,985,523,976.41
  5. Step 5: Solve for x
    x = 14,985,523,976.41/120,399.03
  6. Step 6: Final answer
    x = 124,465.49

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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.