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Finding the Third Proportional to 74,345.50 and 153,839

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Solution

The third proportional to 74,345.50 and 153,839 is: 318,330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,345.50 : 153,839 = 153,839 : x
  2. Step 2: Convert to fraction form
    74,345.50/153,839 = 153,839/x
  3. Step 3: Cross multiply
    74,345.50x = 153,839 × 153,839
  4. Step 4: Simplify right side
    74,345.50x = 23,666,437,921
  5. Step 5: Solve for x
    x = 23,666,437,921/74,345.50
  6. Step 6: Final answer
    x = 318,330.47

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.