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Finding the Fourth Proportional to 145,759.99, 218,464.48 and 66,765.55

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Solution

The fourth proportional to 145,759.99, 218,464.48 and 66,765.55 is: 100,067.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,759.99 : 218,464.48 = 66,765.55 : x
  2. Step 2: Convert to fraction form
    145,759.99/218,464.48 = 66,765.55/x
  3. Step 3: Cross multiply
    145,759.99x = 218,464.48 × 66,765.55
  4. Step 4: Simplify right side
    145,759.99x = 14,585,901,162.66
  5. Step 5: Solve for x
    x = 14,585,901,162.66/145,759.99
  6. Step 6: Final answer
    x = 100,067.93

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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.