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Finding the Third Proportional to 74,488.50 and 115,409.25

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Solution

The third proportional to 74,488.50 and 115,409.25 is: 178,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,488.50 : 115,409.25 = 115,409.25 : x
  2. Step 2: Convert to fraction form
    74,488.50/115,409.25 = 115,409.25/x
  3. Step 3: Cross multiply
    74,488.50x = 115,409.25 × 115,409.25
  4. Step 4: Simplify right side
    74,488.50x = 13,319,294,985.56
  5. Step 5: Solve for x
    x = 13,319,294,985.56/74,488.50
  6. Step 6: Final answer
    x = 178,810.08

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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.