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Finding the Fourth Proportional to 201,787.83, 302,679 and 68,760.81

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Solution

The fourth proportional to 201,787.83, 302,679 and 68,760.81 is: 103,140.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,787.83 : 302,679 = 68,760.81 : x
  2. Step 2: Convert to fraction form
    201,787.83/302,679 = 68,760.81/x
  3. Step 3: Cross multiply
    201,787.83x = 302,679 × 68,760.81
  4. Step 4: Simplify right side
    201,787.83x = 20,812,453,209.99
  5. Step 5: Solve for x
    x = 20,812,453,209.99/201,787.83
  6. Step 6: Final answer
    x = 103,140.28

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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.