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Finding the Fourth Proportional to 93,612.80, 140,419.20 and 88,801.40

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Solution

The fourth proportional to 93,612.80, 140,419.20 and 88,801.40 is: 133,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,612.80 : 140,419.20 = 88,801.40 : x
  2. Step 2: Convert to fraction form
    93,612.80/140,419.20 = 88,801.40/x
  3. Step 3: Cross multiply
    93,612.80x = 140,419.20 × 88,801.40
  4. Step 4: Simplify right side
    93,612.80x = 12,469,421,546.88
  5. Step 5: Solve for x
    x = 12,469,421,546.88/93,612.80
  6. Step 6: Final answer
    x = 133,202.10

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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.