Home / 149,602.28-206,422.90-89,178.57

Finding the Fourth Proportional to 149,602.28, 206,422.90 and 89,178.57

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Solution

The fourth proportional to 149,602.28, 206,422.90 and 89,178.57 is: 123,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,602.28 : 206,422.90 = 89,178.57 : x
  2. Step 2: Convert to fraction form
    149,602.28/206,422.90 = 89,178.57/x
  3. Step 3: Cross multiply
    149,602.28x = 206,422.90 × 89,178.57
  4. Step 4: Simplify right side
    149,602.28x = 18,408,498,814.31
  5. Step 5: Solve for x
    x = 18,408,498,814.31/149,602.28
  6. Step 6: Final answer
    x = 123,049.59

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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.