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Finding the Fourth Proportional to 111,352.94, 166,752.49 and 77,916.34

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Solution

The fourth proportional to 111,352.94, 166,752.49 and 77,916.34 is: 116,680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.94 : 166,752.49 = 77,916.34 : x
  2. Step 2: Convert to fraction form
    111,352.94/166,752.49 = 77,916.34/x
  3. Step 3: Cross multiply
    111,352.94x = 166,752.49 × 77,916.34
  4. Step 4: Simplify right side
    111,352.94x = 12,992,743,706.69
  5. Step 5: Solve for x
    x = 12,992,743,706.69/111,352.94
  6. Step 6: Final answer
    x = 116,680.74

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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.