Home / 202,338.45-279,338.90-121,785.75

Finding the Fourth Proportional to 202,338.45, 279,338.90 and 121,785.75

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Solution

The fourth proportional to 202,338.45, 279,338.90 and 121,785.75 is: 168,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,338.45 : 279,338.90 = 121,785.75 : x
  2. Step 2: Convert to fraction form
    202,338.45/279,338.90 = 121,785.75/x
  3. Step 3: Cross multiply
    202,338.45x = 279,338.90 × 121,785.75
  4. Step 4: Simplify right side
    202,338.45x = 34,019,496,831.75
  5. Step 5: Solve for x
    x = 34,019,496,831.75/202,338.45
  6. Step 6: Final answer
    x = 168,131.65

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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.