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Finding the Third Proportional to 59,986.50 and 128,700.75

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Solution

The third proportional to 59,986.50 and 128,700.75 is: 276,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,986.50 : 128,700.75 = 128,700.75 : x
  2. Step 2: Convert to fraction form
    59,986.50/128,700.75 = 128,700.75/x
  3. Step 3: Cross multiply
    59,986.50x = 128,700.75 × 128,700.75
  4. Step 4: Simplify right side
    59,986.50x = 16,563,883,050.56
  5. Step 5: Solve for x
    x = 16,563,883,050.56/59,986.50
  6. Step 6: Final answer
    x = 276,126.85

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.