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Finding the Third Proportional to 117,720 and 176,840

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Solution

The third proportional to 117,720 and 176,840 is: 265,650.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,720 : 176,840 = 176,840 : x
  2. Step 2: Convert to fraction form
    117,720/176,840 = 176,840/x
  3. Step 3: Cross multiply
    117,720x = 176,840 × 176,840
  4. Step 4: Simplify right side
    117,720x = 31,272,385,600
  5. Step 5: Solve for x
    x = 31,272,385,600/117,720
  6. Step 6: Final answer
    x = 265,650.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.