Home / 149,269.14-205,988.43-81,286.92

Finding the Fourth Proportional to 149,269.14, 205,988.43 and 81,286.92

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Solution

The fourth proportional to 149,269.14, 205,988.43 and 81,286.92 is: 112,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,269.14 : 205,988.43 = 81,286.92 : x
  2. Step 2: Convert to fraction form
    149,269.14/205,988.43 = 81,286.92/x
  3. Step 3: Cross multiply
    149,269.14x = 205,988.43 × 81,286.92
  4. Step 4: Simplify right side
    149,269.14x = 16,744,165,030.34
  5. Step 5: Solve for x
    x = 16,744,165,030.34/149,269.14
  6. Step 6: Final answer
    x = 112,174.33

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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.