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Finding the Fourth Proportional to 89,866.40, 134,799.60 and 82,284.80

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Solution

The fourth proportional to 89,866.40, 134,799.60 and 82,284.80 is: 123,427.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.40 : 134,799.60 = 82,284.80 : x
  2. Step 2: Convert to fraction form
    89,866.40/134,799.60 = 82,284.80/x
  3. Step 3: Cross multiply
    89,866.40x = 134,799.60 × 82,284.80
  4. Step 4: Simplify right side
    89,866.40x = 11,091,958,126.08
  5. Step 5: Solve for x
    x = 11,091,958,126.08/89,866.40
  6. Step 6: Final answer
    x = 123,427.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.