Home / 120,403.17-166,268.07-90,135.95

Finding the Fourth Proportional to 120,403.17, 166,268.07 and 90,135.95

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Solution

The fourth proportional to 120,403.17, 166,268.07 and 90,135.95 is: 124,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,403.17 : 166,268.07 = 90,135.95 : x
  2. Step 2: Convert to fraction form
    120,403.17/166,268.07 = 90,135.95/x
  3. Step 3: Cross multiply
    120,403.17x = 166,268.07 × 90,135.95
  4. Step 4: Simplify right side
    120,403.17x = 14,986,729,612.78
  5. Step 5: Solve for x
    x = 14,986,729,612.78/120,403.17
  6. Step 6: Final answer
    x = 124,471.22

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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.