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Finding the Third Proportional to 86,617.13 and 128,660.06

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Solution

The third proportional to 86,617.13 and 128,660.06 is: 191,110.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,617.13 : 128,660.06 = 128,660.06 : x
  2. Step 2: Convert to fraction form
    86,617.13/128,660.06 = 128,660.06/x
  3. Step 3: Cross multiply
    86,617.13x = 128,660.06 × 128,660.06
  4. Step 4: Simplify right side
    86,617.13x = 16,553,411,682.50
  5. Step 5: Solve for x
    x = 16,553,411,682.50/86,617.13
  6. Step 6: Final answer
    x = 191,110.15

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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.