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Finding the Third Proportional to 78,991.03 and 121,126.22

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Solution

The third proportional to 78,991.03 and 121,126.22 is: 185,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,991.03 : 121,126.22 = 121,126.22 : x
  2. Step 2: Convert to fraction form
    78,991.03/121,126.22 = 121,126.22/x
  3. Step 3: Cross multiply
    78,991.03x = 121,126.22 × 121,126.22
  4. Step 4: Simplify right side
    78,991.03x = 14,671,560,868.67
  5. Step 5: Solve for x
    x = 14,671,560,868.67/78,991.03
  6. Step 6: Final answer
    x = 185,737.05

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.