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Finding the Fourth Proportional to 117,447.54, 162,009.82 and 74,958.18

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Solution

The fourth proportional to 117,447.54, 162,009.82 and 74,958.18 is: 103,399.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,447.54 : 162,009.82 = 74,958.18 : x
  2. Step 2: Convert to fraction form
    117,447.54/162,009.82 = 74,958.18/x
  3. Step 3: Cross multiply
    117,447.54x = 162,009.82 × 74,958.18
  4. Step 4: Simplify right side
    117,447.54x = 12,143,961,249.33
  5. Step 5: Solve for x
    x = 12,143,961,249.33/117,447.54
  6. Step 6: Final answer
    x = 103,399.03

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1.5x scale

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.