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Finding the Fourth Proportional to 117,431.56, 162,055.50 and 67,131.64

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Solution

The fourth proportional to 117,431.56, 162,055.50 and 67,131.64 is: 92,641.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,431.56 : 162,055.50 = 67,131.64 : x
  2. Step 2: Convert to fraction form
    117,431.56/162,055.50 = 67,131.64/x
  3. Step 3: Cross multiply
    117,431.56x = 162,055.50 × 67,131.64
  4. Step 4: Simplify right side
    117,431.56x = 10,879,051,486.02
  5. Step 5: Solve for x
    x = 10,879,051,486.02/117,431.56
  6. Step 6: Final answer
    x = 92,641.63

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