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Finding the Third Proportional to 84,090.09 and 130,338.28

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Solution

The third proportional to 84,090.09 and 130,338.28 is: 202,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,090.09 : 130,338.28 = 130,338.28 : x
  2. Step 2: Convert to fraction form
    84,090.09/130,338.28 = 130,338.28/x
  3. Step 3: Cross multiply
    84,090.09x = 130,338.28 × 130,338.28
  4. Step 4: Simplify right side
    84,090.09x = 16,988,067,559.20
  5. Step 5: Solve for x
    x = 16,988,067,559.20/84,090.09
  6. Step 6: Final answer
    x = 202,022.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.