Home / 149,932.63-206,909.97-81,947.71

Finding the Fourth Proportional to 149,932.63, 206,909.97 and 81,947.71

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Solution

The fourth proportional to 149,932.63, 206,909.97 and 81,947.71 is: 113,089.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,932.63 : 206,909.97 = 81,947.71 : x
  2. Step 2: Convert to fraction form
    149,932.63/206,909.97 = 81,947.71/x
  3. Step 3: Cross multiply
    149,932.63x = 206,909.97 × 81,947.71
  4. Step 4: Simplify right side
    149,932.63x = 16,955,797,700.39
  5. Step 5: Solve for x
    x = 16,955,797,700.39/149,932.63
  6. Step 6: Final answer
    x = 113,089.45

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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.