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Finding the Fourth Proportional to 117,993.78, 162,831.19 and 64,278.78

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Solution

The fourth proportional to 117,993.78, 162,831.19 and 64,278.78 is: 88,704.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,993.78 : 162,831.19 = 64,278.78 : x
  2. Step 2: Convert to fraction form
    117,993.78/162,831.19 = 64,278.78/x
  3. Step 3: Cross multiply
    117,993.78x = 162,831.19 × 64,278.78
  4. Step 4: Simplify right side
    117,993.78x = 10,466,589,636.55
  5. Step 5: Solve for x
    x = 10,466,589,636.55/117,993.78
  6. Step 6: Final answer
    x = 88,704.59

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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.