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Finding the Fourth Proportional to 245,431.86, 368,106.78 and 67,956.81

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Solution

The fourth proportional to 245,431.86, 368,106.78 and 67,956.81 is: 101,923.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,431.86 : 368,106.78 = 67,956.81 : x
  2. Step 2: Convert to fraction form
    245,431.86/368,106.78 = 67,956.81/x
  3. Step 3: Cross multiply
    245,431.86x = 368,106.78 × 67,956.81
  4. Step 4: Simplify right side
    245,431.86x = 25,015,362,508.17
  5. Step 5: Solve for x
    x = 25,015,362,508.17/245,431.86
  6. Step 6: Final answer
    x = 101,923.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.