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Finding the Fourth Proportional to 85,954.53, 128,197.01 and 75,493.38

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Solution

The fourth proportional to 85,954.53, 128,197.01 and 75,493.38 is: 112,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.53 : 128,197.01 = 75,493.38 : x
  2. Step 2: Convert to fraction form
    85,954.53/128,197.01 = 75,493.38/x
  3. Step 3: Cross multiply
    85,954.53x = 128,197.01 × 75,493.38
  4. Step 4: Simplify right side
    85,954.53x = 9,678,025,213.33
  5. Step 5: Solve for x
    x = 9,678,025,213.33/85,954.53
  6. Step 6: Final answer
    x = 112,594.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.