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Finding the Third Proportional to 90,001.13 and 138,008.81

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Solution

The third proportional to 90,001.13 and 138,008.81 is: 211,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,001.13 : 138,008.81 = 138,008.81 : x
  2. Step 2: Convert to fraction form
    90,001.13/138,008.81 = 138,008.81/x
  3. Step 3: Cross multiply
    90,001.13x = 138,008.81 × 138,008.81
  4. Step 4: Simplify right side
    90,001.13x = 19,046,432,327.66
  5. Step 5: Solve for x
    x = 19,046,432,327.66/90,001.13
  6. Step 6: Final answer
    x = 211,624.38

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.