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Finding the Fourth Proportional to 93,486.70, 140,230.05 and 89,857.90

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Solution

The fourth proportional to 93,486.70, 140,230.05 and 89,857.90 is: 134,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,486.70 : 140,230.05 = 89,857.90 : x
  2. Step 2: Convert to fraction form
    93,486.70/140,230.05 = 89,857.90/x
  3. Step 3: Cross multiply
    93,486.70x = 140,230.05 × 89,857.90
  4. Step 4: Simplify right side
    93,486.70x = 12,600,777,809.90
  5. Step 5: Solve for x
    x = 12,600,777,809.90/93,486.70
  6. Step 6: Final answer
    x = 134,786.85

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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.