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Finding the Fourth Proportional to 111,647.52, 154,064.64 and 63,889.92

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Solution

The fourth proportional to 111,647.52, 154,064.64 and 63,889.92 is: 88,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,647.52 : 154,064.64 = 63,889.92 : x
  2. Step 2: Convert to fraction form
    111,647.52/154,064.64 = 63,889.92/x
  3. Step 3: Cross multiply
    111,647.52x = 154,064.64 × 63,889.92
  4. Step 4: Simplify right side
    111,647.52x = 9,843,177,524.43
  5. Step 5: Solve for x
    x = 9,843,177,524.43/111,647.52
  6. Step 6: Final answer
    x = 88,162.98

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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.