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Finding the Fourth Proportional to 88,473.80, 132,969.90 and 86,918.60

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Solution

The fourth proportional to 88,473.80, 132,969.90 and 86,918.60 is: 130,632.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,473.80 : 132,969.90 = 86,918.60 : x
  2. Step 2: Convert to fraction form
    88,473.80/132,969.90 = 86,918.60/x
  3. Step 3: Cross multiply
    88,473.80x = 132,969.90 × 86,918.60
  4. Step 4: Simplify right side
    88,473.80x = 11,557,557,550.14
  5. Step 5: Solve for x
    x = 11,557,557,550.14/88,473.80
  6. Step 6: Final answer
    x = 130,632.54

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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.