Home / 145,583.82-200,908.74-81,921.60

Finding the Fourth Proportional to 145,583.82, 200,908.74 and 81,921.60

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Solution

The fourth proportional to 145,583.82, 200,908.74 and 81,921.60 is: 113,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,583.82 : 200,908.74 = 81,921.60 : x
  2. Step 2: Convert to fraction form
    145,583.82/200,908.74 = 81,921.60/x
  3. Step 3: Cross multiply
    145,583.82x = 200,908.74 × 81,921.60
  4. Step 4: Simplify right side
    145,583.82x = 16,458,765,434.78
  5. Step 5: Solve for x
    x = 16,458,765,434.78/145,583.82
  6. Step 6: Final answer
    x = 113,053.53

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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.