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Finding the Third Proportional to 90,688.50 and 136,381.50

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Solution

The third proportional to 90,688.50 and 136,381.50 is: 205,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,688.50 : 136,381.50 = 136,381.50 : x
  2. Step 2: Convert to fraction form
    90,688.50/136,381.50 = 136,381.50/x
  3. Step 3: Cross multiply
    90,688.50x = 136,381.50 × 136,381.50
  4. Step 4: Simplify right side
    90,688.50x = 18,599,913,542.25
  5. Step 5: Solve for x
    x = 18,599,913,542.25/90,688.50
  6. Step 6: Final answer
    x = 205,096.72

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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.