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Finding the Third Proportional to 100,305.21 and 155,813.98

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Solution

The third proportional to 100,305.21 and 155,813.98 is: 242,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,305.21 : 155,813.98 = 155,813.98 : x
  2. Step 2: Convert to fraction form
    100,305.21/155,813.98 = 155,813.98/x
  3. Step 3: Cross multiply
    100,305.21x = 155,813.98 × 155,813.98
  4. Step 4: Simplify right side
    100,305.21x = 24,277,995,292.22
  5. Step 5: Solve for x
    x = 24,277,995,292.22/100,305.21
  6. Step 6: Final answer
    x = 242,041.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.