Home / 189,799.86-261,923.79-103,759.20

Finding the Fourth Proportional to 189,799.86, 261,923.79 and 103,759.20

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Solution

The fourth proportional to 189,799.86, 261,923.79 and 103,759.20 is: 143,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,799.86 : 261,923.79 = 103,759.20 : x
  2. Step 2: Convert to fraction form
    189,799.86/261,923.79 = 103,759.20/x
  3. Step 3: Cross multiply
    189,799.86x = 261,923.79 × 103,759.20
  4. Step 4: Simplify right side
    189,799.86x = 27,177,002,911.37
  5. Step 5: Solve for x
    x = 27,177,002,911.37/189,799.86
  6. Step 6: Final answer
    x = 143,187.69

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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.