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Finding the Fourth Proportional to 114,488.88, 157,964.76 and 66,078.96

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Solution

The fourth proportional to 114,488.88, 157,964.76 and 66,078.96 is: 91,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,488.88 : 157,964.76 = 66,078.96 : x
  2. Step 2: Convert to fraction form
    114,488.88/157,964.76 = 66,078.96/x
  3. Step 3: Cross multiply
    114,488.88x = 157,964.76 × 66,078.96
  4. Step 4: Simplify right side
    114,488.88x = 10,438,147,057.45
  5. Step 5: Solve for x
    x = 10,438,147,057.45/114,488.88
  6. Step 6: Final answer
    x = 91,171.71

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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.