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Finding the Third Proportional to 120,885.75 and 212,510.25

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Solution

The third proportional to 120,885.75 and 212,510.25 is: 373,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,885.75 : 212,510.25 = 212,510.25 : x
  2. Step 2: Convert to fraction form
    120,885.75/212,510.25 = 212,510.25/x
  3. Step 3: Cross multiply
    120,885.75x = 212,510.25 × 212,510.25
  4. Step 4: Simplify right side
    120,885.75x = 45,160,606,355.06
  5. Step 5: Solve for x
    x = 45,160,606,355.06/120,885.75
  6. Step 6: Final answer
    x = 373,580.89

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.