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Finding the Fourth Proportional to 111,053.88, 166,942.08 and 89,107.74

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Solution

The fourth proportional to 111,053.88, 166,942.08 and 89,107.74 is: 133,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,053.88 : 166,942.08 = 89,107.74 : x
  2. Step 2: Convert to fraction form
    111,053.88/166,942.08 = 89,107.74/x
  3. Step 3: Cross multiply
    111,053.88x = 166,942.08 × 89,107.74
  4. Step 4: Simplify right side
    111,053.88x = 14,875,831,459.70
  5. Step 5: Solve for x
    x = 14,875,831,459.70/111,053.88
  6. Step 6: Final answer
    x = 133,951.48

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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.