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Finding the Third Proportional to 85,820.50 and 128,244.50

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Solution

The third proportional to 85,820.50 and 128,244.50 is: 191,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,820.50 : 128,244.50 = 128,244.50 : x
  2. Step 2: Convert to fraction form
    85,820.50/128,244.50 = 128,244.50/x
  3. Step 3: Cross multiply
    85,820.50x = 128,244.50 × 128,244.50
  4. Step 4: Simplify right side
    85,820.50x = 16,446,651,780.25
  5. Step 5: Solve for x
    x = 16,446,651,780.25/85,820.50
  6. Step 6: Final answer
    x = 191,640.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.