Home / 189,208.09-261,113.39-108,649.95

Finding the Fourth Proportional to 189,208.09, 261,113.39 and 108,649.95

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Solution

The fourth proportional to 189,208.09, 261,113.39 and 108,649.95 is: 149,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,208.09 : 261,113.39 = 108,649.95 : x
  2. Step 2: Convert to fraction form
    189,208.09/261,113.39 = 108,649.95/x
  3. Step 3: Cross multiply
    189,208.09x = 261,113.39 × 108,649.95
  4. Step 4: Simplify right side
    189,208.09x = 28,369,956,767.83
  5. Step 5: Solve for x
    x = 28,369,956,767.83/189,208.09
  6. Step 6: Final answer
    x = 149,940.51

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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.