Home / 145,519.82-200,815.44-81,857.60

Finding the Fourth Proportional to 145,519.82, 200,815.44 and 81,857.60

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Solution

The fourth proportional to 145,519.82, 200,815.44 and 81,857.60 is: 112,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,519.82 : 200,815.44 = 81,857.60 : x
  2. Step 2: Convert to fraction form
    145,519.82/200,815.44 = 81,857.60/x
  3. Step 3: Cross multiply
    145,519.82x = 200,815.44 × 81,857.60
  4. Step 4: Simplify right side
    145,519.82x = 16,438,269,961.34
  5. Step 5: Solve for x
    x = 16,438,269,961.34/145,519.82
  6. Step 6: Final answer
    x = 112,962.41

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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.