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Finding the Third Proportional to 128,422.69 and 204,526.13

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Solution

The third proportional to 128,422.69 and 204,526.13 is: 325,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,422.69 : 204,526.13 = 204,526.13 : x
  2. Step 2: Convert to fraction form
    128,422.69/204,526.13 = 204,526.13/x
  3. Step 3: Cross multiply
    128,422.69x = 204,526.13 × 204,526.13
  4. Step 4: Simplify right side
    128,422.69x = 41,830,935,807.52
  5. Step 5: Solve for x
    x = 41,830,935,807.52/128,422.69
  6. Step 6: Final answer
    x = 325,728.55

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.