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Finding the Third Proportional to 91,742 and 139,984.75

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Solution

The third proportional to 91,742 and 139,984.75 is: 213,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,742 : 139,984.75 = 139,984.75 : x
  2. Step 2: Convert to fraction form
    91,742/139,984.75 = 139,984.75/x
  3. Step 3: Cross multiply
    91,742x = 139,984.75 × 139,984.75
  4. Step 4: Simplify right side
    91,742x = 19,595,730,232.56
  5. Step 5: Solve for x
    x = 19,595,730,232.56/91,742
  6. Step 6: Final answer
    x = 213,596.07

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.