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Finding the Third Proportional to 61,431 and 130,153.50

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Solution

The third proportional to 61,431 and 130,153.50 is: 275,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,431 : 130,153.50 = 130,153.50 : x
  2. Step 2: Convert to fraction form
    61,431/130,153.50 = 130,153.50/x
  3. Step 3: Cross multiply
    61,431x = 130,153.50 × 130,153.50
  4. Step 4: Simplify right side
    61,431x = 16,939,933,562.25
  5. Step 5: Solve for x
    x = 16,939,933,562.25/61,431
  6. Step 6: Final answer
    x = 275,755.46

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.