Home / 202,436.49-279,100.31-138,660.33

Finding the Fourth Proportional to 202,436.49, 279,100.31 and 138,660.33

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Solution

The fourth proportional to 202,436.49, 279,100.31 and 138,660.33 is: 191,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,436.49 : 279,100.31 = 138,660.33 : x
  2. Step 2: Convert to fraction form
    202,436.49/279,100.31 = 138,660.33/x
  3. Step 3: Cross multiply
    202,436.49x = 279,100.31 × 138,660.33
  4. Step 4: Simplify right side
    202,436.49x = 38,700,140,394.40
  5. Step 5: Solve for x
    x = 38,700,140,394.40/202,436.49
  6. Step 6: Final answer
    x = 191,171.76

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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.