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Finding the Third Proportional to 76,439.25 and 168,430.50

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Solution

The third proportional to 76,439.25 and 168,430.50 is: 371,129.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,439.25 : 168,430.50 = 168,430.50 : x
  2. Step 2: Convert to fraction form
    76,439.25/168,430.50 = 168,430.50/x
  3. Step 3: Cross multiply
    76,439.25x = 168,430.50 × 168,430.50
  4. Step 4: Simplify right side
    76,439.25x = 28,368,833,330.25
  5. Step 5: Solve for x
    x = 28,368,833,330.25/76,439.25
  6. Step 6: Final answer
    x = 371,129.14

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.