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Finding the Third Proportional to 40,178 and 87,403

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Solution

The third proportional to 40,178 and 87,403 is: 190,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,178 : 87,403 = 87,403 : x
  2. Step 2: Convert to fraction form
    40,178/87,403 = 87,403/x
  3. Step 3: Cross multiply
    40,178x = 87,403 × 87,403
  4. Step 4: Simplify right side
    40,178x = 7,639,284,409
  5. Step 5: Solve for x
    x = 7,639,284,409/40,178
  6. Step 6: Final answer
    x = 190,136.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.