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Finding the Third Proportional to 79,312 and 176,120

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Solution

The third proportional to 79,312 and 176,120 is: 391,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,312 : 176,120 = 176,120 : x
  2. Step 2: Convert to fraction form
    79,312/176,120 = 176,120/x
  3. Step 3: Cross multiply
    79,312x = 176,120 × 176,120
  4. Step 4: Simplify right side
    79,312x = 31,018,254,400
  5. Step 5: Solve for x
    x = 31,018,254,400/79,312
  6. Step 6: Final answer
    x = 391,091.57

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.