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Finding the Fourth Proportional to 201,108.90, 301,663.35 and 133,749.30

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Solution

The fourth proportional to 201,108.90, 301,663.35 and 133,749.30 is: 200,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,108.90 : 301,663.35 = 133,749.30 : x
  2. Step 2: Convert to fraction form
    201,108.90/301,663.35 = 133,749.30/x
  3. Step 3: Cross multiply
    201,108.90x = 301,663.35 × 133,749.30
  4. Step 4: Simplify right side
    201,108.90x = 40,347,261,898.16
  5. Step 5: Solve for x
    x = 40,347,261,898.16/201,108.90
  6. Step 6: Final answer
    x = 200,623.95

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1.5x scale

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.