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Finding the Third Proportional to 56,117.75 and 121,137.75

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Solution

The third proportional to 56,117.75 and 121,137.75 is: 261,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,117.75 : 121,137.75 = 121,137.75 : x
  2. Step 2: Convert to fraction form
    56,117.75/121,137.75 = 121,137.75/x
  3. Step 3: Cross multiply
    56,117.75x = 121,137.75 × 121,137.75
  4. Step 4: Simplify right side
    56,117.75x = 14,674,354,475.06
  5. Step 5: Solve for x
    x = 14,674,354,475.06/56,117.75
  6. Step 6: Final answer
    x = 261,492.21

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.