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Finding the Third Proportional to 84,378.75 and 123,235.50

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Solution

The third proportional to 84,378.75 and 123,235.50 is: 179,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,378.75 : 123,235.50 = 123,235.50 : x
  2. Step 2: Convert to fraction form
    84,378.75/123,235.50 = 123,235.50/x
  3. Step 3: Cross multiply
    84,378.75x = 123,235.50 × 123,235.50
  4. Step 4: Simplify right side
    84,378.75x = 15,186,988,460.25
  5. Step 5: Solve for x
    x = 15,186,988,460.25/84,378.75
  6. Step 6: Final answer
    x = 179,985.94

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.