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Finding the Third Proportional to 89,916.75 and 139,704.75

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Solution

The third proportional to 89,916.75 and 139,704.75 is: 217,060.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,916.75 : 139,704.75 = 139,704.75 : x
  2. Step 2: Convert to fraction form
    89,916.75/139,704.75 = 139,704.75/x
  3. Step 3: Cross multiply
    89,916.75x = 139,704.75 × 139,704.75
  4. Step 4: Simplify right side
    89,916.75x = 19,517,417,172.56
  5. Step 5: Solve for x
    x = 19,517,417,172.56/89,916.75
  6. Step 6: Final answer
    x = 217,060.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.