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Finding the Third Proportional to 74,928.80 and 156,783.09

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Solution

The third proportional to 74,928.80 and 156,783.09 is: 328,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,928.80 : 156,783.09 = 156,783.09 : x
  2. Step 2: Convert to fraction form
    74,928.80/156,783.09 = 156,783.09/x
  3. Step 3: Cross multiply
    74,928.80x = 156,783.09 × 156,783.09
  4. Step 4: Simplify right side
    74,928.80x = 24,580,938,485.82
  5. Step 5: Solve for x
    x = 24,580,938,485.82/74,928.80
  6. Step 6: Final answer
    x = 328,057.30

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.