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Finding the Fourth Proportional to 117,524.78, 162,317.73 and 79,218.26

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Solution

The fourth proportional to 117,524.78, 162,317.73 and 79,218.26 is: 109,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,524.78 : 162,317.73 = 79,218.26 : x
  2. Step 2: Convert to fraction form
    117,524.78/162,317.73 = 79,218.26/x
  3. Step 3: Cross multiply
    117,524.78x = 162,317.73 × 79,218.26
  4. Step 4: Simplify right side
    117,524.78x = 12,858,528,840.61
  5. Step 5: Solve for x
    x = 12,858,528,840.61/117,524.78
  6. Step 6: Final answer
    x = 109,411.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.