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Finding the Third Proportional to 66,356.72 and 143,223.19

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Solution

The third proportional to 66,356.72 and 143,223.19 is: 309,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,356.72 : 143,223.19 = 143,223.19 : x
  2. Step 2: Convert to fraction form
    66,356.72/143,223.19 = 143,223.19/x
  3. Step 3: Cross multiply
    66,356.72x = 143,223.19 × 143,223.19
  4. Step 4: Simplify right side
    66,356.72x = 20,512,881,437.66
  5. Step 5: Solve for x
    x = 20,512,881,437.66/66,356.72
  6. Step 6: Final answer
    x = 309,130.44

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.