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Finding the Third Proportional to 102,930.75 and 216,931.50

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Solution

The third proportional to 102,930.75 and 216,931.50 is: 457,193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,930.75 : 216,931.50 = 216,931.50 : x
  2. Step 2: Convert to fraction form
    102,930.75/216,931.50 = 216,931.50/x
  3. Step 3: Cross multiply
    102,930.75x = 216,931.50 × 216,931.50
  4. Step 4: Simplify right side
    102,930.75x = 47,059,275,692.25
  5. Step 5: Solve for x
    x = 47,059,275,692.25/102,930.75
  6. Step 6: Final answer
    x = 457,193.56

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.