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Finding the Third Proportional to 77,557.50 and 124,434.75

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Solution

The third proportional to 77,557.50 and 124,434.75 is: 199,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,557.50 : 124,434.75 = 124,434.75 : x
  2. Step 2: Convert to fraction form
    77,557.50/124,434.75 = 124,434.75/x
  3. Step 3: Cross multiply
    77,557.50x = 124,434.75 × 124,434.75
  4. Step 4: Simplify right side
    77,557.50x = 15,484,007,007.56
  5. Step 5: Solve for x
    x = 15,484,007,007.56/77,557.50
  6. Step 6: Final answer
    x = 199,645.51

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.