Home / 147,785.22-203,906.07-90,403.70

Finding the Fourth Proportional to 147,785.22, 203,906.07 and 90,403.70

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Solution

The fourth proportional to 147,785.22, 203,906.07 and 90,403.70 is: 124,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,785.22 : 203,906.07 = 90,403.70 : x
  2. Step 2: Convert to fraction form
    147,785.22/203,906.07 = 90,403.70/x
  3. Step 3: Cross multiply
    147,785.22x = 203,906.07 × 90,403.70
  4. Step 4: Simplify right side
    147,785.22x = 18,433,862,160.93
  5. Step 5: Solve for x
    x = 18,433,862,160.93/147,785.22
  6. Step 6: Final answer
    x = 124,734.14

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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.