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Finding the Third Proportional to 66,882.63 and 139,301.13

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Solution

The third proportional to 66,882.63 and 139,301.13 is: 290,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,882.63 : 139,301.13 = 139,301.13 : x
  2. Step 2: Convert to fraction form
    66,882.63/139,301.13 = 139,301.13/x
  3. Step 3: Cross multiply
    66,882.63x = 139,301.13 × 139,301.13
  4. Step 4: Simplify right side
    66,882.63x = 19,404,803,426.27
  5. Step 5: Solve for x
    x = 19,404,803,426.27/66,882.63
  6. Step 6: Final answer
    x = 290,132.20

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.