Home / 189,288.83-261,218.07-108,721.55

Finding the Fourth Proportional to 189,288.83, 261,218.07 and 108,721.55

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Solution

The fourth proportional to 189,288.83, 261,218.07 and 108,721.55 is: 150,035.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,288.83 : 261,218.07 = 108,721.55 : x
  2. Step 2: Convert to fraction form
    189,288.83/261,218.07 = 108,721.55/x
  3. Step 3: Cross multiply
    189,288.83x = 261,218.07 × 108,721.55
  4. Step 4: Simplify right side
    189,288.83x = 28,400,033,458.41
  5. Step 5: Solve for x
    x = 28,400,033,458.41/189,288.83
  6. Step 6: Final answer
    x = 150,035.44

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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.