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Finding the Third Proportional to 77,920.63 and 168,142.75

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Solution

The third proportional to 77,920.63 and 168,142.75 is: 362,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,920.63 : 168,142.75 = 168,142.75 : x
  2. Step 2: Convert to fraction form
    77,920.63/168,142.75 = 168,142.75/x
  3. Step 3: Cross multiply
    77,920.63x = 168,142.75 × 168,142.75
  4. Step 4: Simplify right side
    77,920.63x = 28,271,984,377.56
  5. Step 5: Solve for x
    x = 28,271,984,377.56/77,920.63
  6. Step 6: Final answer
    x = 362,830.56

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.