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Finding the Fourth Proportional to 201,031.36, 301,500.98 and 120,001.28

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Solution

The fourth proportional to 201,031.36, 301,500.98 and 120,001.28 is: 179,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,031.36 : 301,500.98 = 120,001.28 : x
  2. Step 2: Convert to fraction form
    201,031.36/301,500.98 = 120,001.28/x
  3. Step 3: Cross multiply
    201,031.36x = 301,500.98 × 120,001.28
  4. Step 4: Simplify right side
    201,031.36x = 36,180,503,521.25
  5. Step 5: Solve for x
    x = 36,180,503,521.25/201,031.36
  6. Step 6: Final answer
    x = 179,974.43

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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.