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Finding the Fourth Proportional to 188,859.30, 282,986.55 and 99,996.90

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Solution

The fourth proportional to 188,859.30, 282,986.55 and 99,996.90 is: 149,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,859.30 : 282,986.55 = 99,996.90 : x
  2. Step 2: Convert to fraction form
    188,859.30/282,986.55 = 99,996.90/x
  3. Step 3: Cross multiply
    188,859.30x = 282,986.55 × 99,996.90
  4. Step 4: Simplify right side
    188,859.30x = 28,297,777,741.70
  5. Step 5: Solve for x
    x = 28,297,777,741.70/188,859.30
  6. Step 6: Final answer
    x = 149,835.24

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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.