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Finding the Fourth Proportional to 201,425.80, 302,372.10 and 108,113.80

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Solution

The fourth proportional to 201,425.80, 302,372.10 and 108,113.80 is: 162,295.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,425.80 : 302,372.10 = 108,113.80 : x
  2. Step 2: Convert to fraction form
    201,425.80/302,372.10 = 108,113.80/x
  3. Step 3: Cross multiply
    201,425.80x = 302,372.10 × 108,113.80
  4. Step 4: Simplify right side
    201,425.80x = 32,690,596,744.98
  5. Step 5: Solve for x
    x = 32,690,596,744.98/201,425.80
  6. Step 6: Final answer
    x = 162,295.98

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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.