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Finding the Third Proportional to 78,530 and 119,434

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Solution

The third proportional to 78,530 and 119,434 is: 181,643.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,530 : 119,434 = 119,434 : x
  2. Step 2: Convert to fraction form
    78,530/119,434 = 119,434/x
  3. Step 3: Cross multiply
    78,530x = 119,434 × 119,434
  4. Step 4: Simplify right side
    78,530x = 14,264,480,356
  5. Step 5: Solve for x
    x = 14,264,480,356/78,530
  6. Step 6: Final answer
    x = 181,643.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.