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Finding the Fourth Proportional to 145,015.44, 200,107.44 and 81,349.44

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Solution

The fourth proportional to 145,015.44, 200,107.44 and 81,349.44 is: 112,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,015.44 : 200,107.44 = 81,349.44 : x
  2. Step 2: Convert to fraction form
    145,015.44/200,107.44 = 81,349.44/x
  3. Step 3: Cross multiply
    145,015.44x = 200,107.44 × 81,349.44
  4. Step 4: Simplify right side
    145,015.44x = 16,278,628,183.83
  5. Step 5: Solve for x
    x = 16,278,628,183.83/145,015.44
  6. Step 6: Final answer
    x = 112,254.45

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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.