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Finding the Fourth Proportional to 117,918, 176,906.16 and 39,040.20

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Solution

The fourth proportional to 117,918, 176,906.16 and 39,040.20 is: 58,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,918 : 176,906.16 = 39,040.20 : x
  2. Step 2: Convert to fraction form
    117,918/176,906.16 = 39,040.20/x
  3. Step 3: Cross multiply
    117,918x = 176,906.16 × 39,040.20
  4. Step 4: Simplify right side
    117,918x = 6,906,451,867.63
  5. Step 5: Solve for x
    x = 6,906,451,867.63/117,918
  6. Step 6: Final answer
    x = 58,569.95

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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.