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Finding the Fourth Proportional to 201,155.40, 301,295.70 and 122,131.80

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Solution

The fourth proportional to 201,155.40, 301,295.70 and 122,131.80 is: 182,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,155.40 : 301,295.70 = 122,131.80 : x
  2. Step 2: Convert to fraction form
    201,155.40/301,295.70 = 122,131.80/x
  3. Step 3: Cross multiply
    201,155.40x = 301,295.70 × 122,131.80
  4. Step 4: Simplify right side
    201,155.40x = 36,797,786,173.26
  5. Step 5: Solve for x
    x = 36,797,786,173.26/201,155.40
  6. Step 6: Final answer
    x = 182,932.13

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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.