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Finding the Third Proportional to 53,490 and 117,126

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Solution

The third proportional to 53,490 and 117,126 is: 256,468.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,490 : 117,126 = 117,126 : x
  2. Step 2: Convert to fraction form
    53,490/117,126 = 117,126/x
  3. Step 3: Cross multiply
    53,490x = 117,126 × 117,126
  4. Step 4: Simplify right side
    53,490x = 13,718,499,876
  5. Step 5: Solve for x
    x = 13,718,499,876/53,490
  6. Step 6: Final answer
    x = 256,468.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.