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Finding the Third Proportional to 64,720 and 141,152

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Solution

The third proportional to 64,720 and 141,152 is: 307,847.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,720 : 141,152 = 141,152 : x
  2. Step 2: Convert to fraction form
    64,720/141,152 = 141,152/x
  3. Step 3: Cross multiply
    64,720x = 141,152 × 141,152
  4. Step 4: Simplify right side
    64,720x = 19,923,887,104
  5. Step 5: Solve for x
    x = 19,923,887,104/64,720
  6. Step 6: Final answer
    x = 307,847.45

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.