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Finding the Third Proportional to 77,718.75 and 170,017.50

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Solution

The third proportional to 77,718.75 and 170,017.50 is: 371,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,718.75 : 170,017.50 = 170,017.50 : x
  2. Step 2: Convert to fraction form
    77,718.75/170,017.50 = 170,017.50/x
  3. Step 3: Cross multiply
    77,718.75x = 170,017.50 × 170,017.50
  4. Step 4: Simplify right side
    77,718.75x = 28,905,950,306.25
  5. Step 5: Solve for x
    x = 28,905,950,306.25/77,718.75
  6. Step 6: Final answer
    x = 371,930.20

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.