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Finding the Third Proportional to 113,020 and 138,292

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Solution

The third proportional to 113,020 and 138,292 is: 169,214.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020 : 138,292 = 138,292 : x
  2. Step 2: Convert to fraction form
    113,020/138,292 = 138,292/x
  3. Step 3: Cross multiply
    113,020x = 138,292 × 138,292
  4. Step 4: Simplify right side
    113,020x = 19,124,677,264
  5. Step 5: Solve for x
    x = 19,124,677,264/113,020
  6. Step 6: Final answer
    x = 169,214.98

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.