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Finding the Third Proportional to 79,653 and 121,990.50

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Solution

The third proportional to 79,653 and 121,990.50 is: 186,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653 : 121,990.50 = 121,990.50 : x
  2. Step 2: Convert to fraction form
    79,653/121,990.50 = 121,990.50/x
  3. Step 3: Cross multiply
    79,653x = 121,990.50 × 121,990.50
  4. Step 4: Simplify right side
    79,653x = 14,881,682,090.25
  5. Step 5: Solve for x
    x = 14,881,682,090.25/79,653
  6. Step 6: Final answer
    x = 186,831.41

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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.