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Finding the Fourth Proportional to 145,997.62, 201,477.27 and 81,469.58

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Solution

The fourth proportional to 145,997.62, 201,477.27 and 81,469.58 is: 112,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,997.62 : 201,477.27 = 81,469.58 : x
  2. Step 2: Convert to fraction form
    145,997.62/201,477.27 = 81,469.58/x
  3. Step 3: Cross multiply
    145,997.62x = 201,477.27 × 81,469.58
  4. Step 4: Simplify right side
    145,997.62x = 16,414,268,997.88
  5. Step 5: Solve for x
    x = 16,414,268,997.88/145,997.62
  6. Step 6: Final answer
    x = 112,428.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.