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Finding the Third Proportional to 66,601.50 and 139,360.50

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Solution

The third proportional to 66,601.50 and 139,360.50 is: 291,605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,601.50 : 139,360.50 = 139,360.50 : x
  2. Step 2: Convert to fraction form
    66,601.50/139,360.50 = 139,360.50/x
  3. Step 3: Cross multiply
    66,601.50x = 139,360.50 × 139,360.50
  4. Step 4: Simplify right side
    66,601.50x = 19,421,348,960.25
  5. Step 5: Solve for x
    x = 19,421,348,960.25/66,601.50
  6. Step 6: Final answer
    x = 291,605.28

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.