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Finding the Fourth Proportional to 180,935.40, 271,403.79 and 75,680.55

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Solution

The fourth proportional to 180,935.40, 271,403.79 and 75,680.55 is: 113,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,935.40 : 271,403.79 = 75,680.55 : x
  2. Step 2: Convert to fraction form
    180,935.40/271,403.79 = 75,680.55/x
  3. Step 3: Cross multiply
    180,935.40x = 271,403.79 × 75,680.55
  4. Step 4: Simplify right side
    180,935.40x = 20,539,988,099.28
  5. Step 5: Solve for x
    x = 20,539,988,099.28/180,935.40
  6. Step 6: Final answer
    x = 113,521.11

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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.