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Finding the Fourth Proportional to 117,474.86, 162,112.96 and 66,486.67

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Solution

The fourth proportional to 117,474.86, 162,112.96 and 66,486.67 is: 91,750.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,474.86 : 162,112.96 = 66,486.67 : x
  2. Step 2: Convert to fraction form
    117,474.86/162,112.96 = 66,486.67/x
  3. Step 3: Cross multiply
    117,474.86x = 162,112.96 × 66,486.67
  4. Step 4: Simplify right side
    117,474.86x = 10,778,350,874.24
  5. Step 5: Solve for x
    x = 10,778,350,874.24/117,474.86
  6. Step 6: Final answer
    x = 91,750.28

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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.