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Finding the Fourth Proportional to 201,158.40, 301,300.20 and 122,134.80

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Solution

The fourth proportional to 201,158.40, 301,300.20 and 122,134.80 is: 182,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,158.40 : 301,300.20 = 122,134.80 : x
  2. Step 2: Convert to fraction form
    201,158.40/301,300.20 = 122,134.80/x
  3. Step 3: Cross multiply
    201,158.40x = 301,300.20 × 122,134.80
  4. Step 4: Simplify right side
    201,158.40x = 36,799,239,666.96
  5. Step 5: Solve for x
    x = 36,799,239,666.96/201,158.40
  6. Step 6: Final answer
    x = 182,936.63

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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.