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Finding the Fourth Proportional to 111,288.92, 165,940.78 and 98,925.08

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Solution

The fourth proportional to 111,288.92, 165,940.78 and 98,925.08 is: 147,505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,288.92 : 165,940.78 = 98,925.08 : x
  2. Step 2: Convert to fraction form
    111,288.92/165,940.78 = 98,925.08/x
  3. Step 3: Cross multiply
    111,288.92x = 165,940.78 × 98,925.08
  4. Step 4: Simplify right side
    111,288.92x = 16,415,704,936.76
  5. Step 5: Solve for x
    x = 16,415,704,936.76/111,288.92
  6. Step 6: Final answer
    x = 147,505.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.