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Finding the Fourth Proportional to 111,352.69, 166,752.11 and 77,916.09

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Solution

The fourth proportional to 111,352.69, 166,752.11 and 77,916.09 is: 116,680.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.69 : 166,752.11 = 77,916.09 : x
  2. Step 2: Convert to fraction form
    111,352.69/166,752.11 = 77,916.09/x
  3. Step 3: Cross multiply
    111,352.69x = 166,752.11 × 77,916.09
  4. Step 4: Simplify right side
    111,352.69x = 12,992,672,605.24
  5. Step 5: Solve for x
    x = 12,992,672,605.24/111,352.69
  6. Step 6: Final answer
    x = 116,680.37

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1.5x scale

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.