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Finding the Third Proportional to 77,153.25 and 120,240.75

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Solution

The third proportional to 77,153.25 and 120,240.75 is: 187,391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,153.25 : 120,240.75 = 120,240.75 : x
  2. Step 2: Convert to fraction form
    77,153.25/120,240.75 = 120,240.75/x
  3. Step 3: Cross multiply
    77,153.25x = 120,240.75 × 120,240.75
  4. Step 4: Simplify right side
    77,153.25x = 14,457,837,960.56
  5. Step 5: Solve for x
    x = 14,457,837,960.56/77,153.25
  6. Step 6: Final answer
    x = 187,391.17

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.