Home / 149,858.10-206,833.70-89,398.49

Finding the Fourth Proportional to 149,858.10, 206,833.70 and 89,398.49

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Solution

The fourth proportional to 149,858.10, 206,833.70 and 89,398.49 is: 123,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,858.10 : 206,833.70 = 89,398.49 : x
  2. Step 2: Convert to fraction form
    149,858.10/206,833.70 = 89,398.49/x
  3. Step 3: Cross multiply
    149,858.10x = 206,833.70 × 89,398.49
  4. Step 4: Simplify right side
    149,858.10x = 18,490,619,650.44
  5. Step 5: Solve for x
    x = 18,490,619,650.44/149,858.10
  6. Step 6: Final answer
    x = 123,387.52

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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.