Home / 145,581.82-200,905.98-81,919.60

Finding the Fourth Proportional to 145,581.82, 200,905.98 and 81,919.60

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Solution

The fourth proportional to 145,581.82, 200,905.98 and 81,919.60 is: 113,050.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,581.82 : 200,905.98 = 81,919.60 : x
  2. Step 2: Convert to fraction form
    145,581.82/200,905.98 = 81,919.60/x
  3. Step 3: Cross multiply
    145,581.82x = 200,905.98 × 81,919.60
  4. Step 4: Simplify right side
    145,581.82x = 16,458,137,519.21
  5. Step 5: Solve for x
    x = 16,458,137,519.21/145,581.82
  6. Step 6: Final answer
    x = 113,050.77

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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.