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Finding the Fourth Proportional to 180,935.60, 271,403.40 and 128,447.60

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Solution

The fourth proportional to 180,935.60, 271,403.40 and 128,447.60 is: 192,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,935.60 : 271,403.40 = 128,447.60 : x
  2. Step 2: Convert to fraction form
    180,935.60/271,403.40 = 128,447.60/x
  3. Step 3: Cross multiply
    180,935.60x = 271,403.40 × 128,447.60
  4. Step 4: Simplify right side
    180,935.60x = 34,861,115,361.84
  5. Step 5: Solve for x
    x = 34,861,115,361.84/180,935.60
  6. Step 6: Final answer
    x = 192,671.40

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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.