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Finding the Fourth Proportional to 145,633.88, 200,961.95 and 81,098.24

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Solution

The fourth proportional to 145,633.88, 200,961.95 and 81,098.24 is: 111,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633.88 : 200,961.95 = 81,098.24 : x
  2. Step 2: Convert to fraction form
    145,633.88/200,961.95 = 81,098.24/x
  3. Step 3: Cross multiply
    145,633.88x = 200,961.95 × 81,098.24
  4. Step 4: Simplify right side
    145,633.88x = 16,297,661,157.12
  5. Step 5: Solve for x
    x = 16,297,661,157.12/145,633.88
  6. Step 6: Final answer
    x = 111,908.44

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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.