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Finding the Fourth Proportional to 201,116.20, 301,674.30 and 131,132.20

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Solution

The fourth proportional to 201,116.20, 301,674.30 and 131,132.20 is: 196,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,116.20 : 301,674.30 = 131,132.20 : x
  2. Step 2: Convert to fraction form
    201,116.20/301,674.30 = 131,132.20/x
  3. Step 3: Cross multiply
    201,116.20x = 301,674.30 × 131,132.20
  4. Step 4: Simplify right side
    201,116.20x = 39,559,214,642.46
  5. Step 5: Solve for x
    x = 39,559,214,642.46/201,116.20
  6. Step 6: Final answer
    x = 196,698.30

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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.