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Finding the Fourth Proportional to 88,464.40, 132,696.60 and 84,090.40

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Solution

The fourth proportional to 88,464.40, 132,696.60 and 84,090.40 is: 126,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,464.40 : 132,696.60 = 84,090.40 : x
  2. Step 2: Convert to fraction form
    88,464.40/132,696.60 = 84,090.40/x
  3. Step 3: Cross multiply
    88,464.40x = 132,696.60 × 84,090.40
  4. Step 4: Simplify right side
    88,464.40x = 11,158,510,172.64
  5. Step 5: Solve for x
    x = 11,158,510,172.64/88,464.40
  6. Step 6: Final answer
    x = 126,135.60

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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.