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Finding the Fourth Proportional to 201,121.40, 301,682.10 and 107,809.40

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Solution

The fourth proportional to 201,121.40, 301,682.10 and 107,809.40 is: 161,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,121.40 : 301,682.10 = 107,809.40 : x
  2. Step 2: Convert to fraction form
    201,121.40/301,682.10 = 107,809.40/x
  3. Step 3: Cross multiply
    201,121.40x = 301,682.10 × 107,809.40
  4. Step 4: Simplify right side
    201,121.40x = 32,524,166,191.74
  5. Step 5: Solve for x
    x = 32,524,166,191.74/201,121.40
  6. Step 6: Final answer
    x = 161,714.10

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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.