Home / 145,660.32-201,003.60-81,996

Finding the Fourth Proportional to 145,660.32, 201,003.60 and 81,996

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Solution

The fourth proportional to 145,660.32, 201,003.60 and 81,996 is: 113,150.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,660.32 : 201,003.60 = 81,996 : x
  2. Step 2: Convert to fraction form
    145,660.32/201,003.60 = 81,996/x
  3. Step 3: Cross multiply
    145,660.32x = 201,003.60 × 81,996
  4. Step 4: Simplify right side
    145,660.32x = 16,481,491,185.60
  5. Step 5: Solve for x
    x = 16,481,491,185.60/145,660.32
  6. Step 6: Final answer
    x = 113,150.18

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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.