Home / 201,628.20-302,443.16-81,687.49

Finding the Fourth Proportional to 201,628.20, 302,443.16 and 81,687.49

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Solution

The fourth proportional to 201,628.20, 302,443.16 and 81,687.49 is: 122,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,628.20 : 302,443.16 = 81,687.49 : x
  2. Step 2: Convert to fraction form
    201,628.20/302,443.16 = 81,687.49/x
  3. Step 3: Cross multiply
    201,628.20x = 302,443.16 × 81,687.49
  4. Step 4: Simplify right side
    201,628.20x = 24,705,821,443.52
  5. Step 5: Solve for x
    x = 24,705,821,443.52/201,628.20
  6. Step 6: Final answer
    x = 122,531.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.