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Finding the Third Proportional to 77,866.31 and 100,374.19

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Solution

The third proportional to 77,866.31 and 100,374.19 is: 129,388.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,866.31 : 100,374.19 = 100,374.19 : x
  2. Step 2: Convert to fraction form
    77,866.31/100,374.19 = 100,374.19/x
  3. Step 3: Cross multiply
    77,866.31x = 100,374.19 × 100,374.19
  4. Step 4: Simplify right side
    77,866.31x = 10,074,977,516.29
  5. Step 5: Solve for x
    x = 10,074,977,516.29/77,866.31
  6. Step 6: Final answer
    x = 129,388.14

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.