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Finding the Fourth Proportional to 201,712.60, 302,568.90 and 91,120.60

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Solution

The fourth proportional to 201,712.60, 302,568.90 and 91,120.60 is: 136,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,712.60 : 302,568.90 = 91,120.60 : x
  2. Step 2: Convert to fraction form
    201,712.60/302,568.90 = 91,120.60/x
  3. Step 3: Cross multiply
    201,712.60x = 302,568.90 × 91,120.60
  4. Step 4: Simplify right side
    201,712.60x = 27,570,259,709.34
  5. Step 5: Solve for x
    x = 27,570,259,709.34/201,712.60
  6. Step 6: Final answer
    x = 136,680.90

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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.