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Finding the Fourth Proportional to 145,584.87, 218,377.30 and 66,699.10

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Solution

The fourth proportional to 145,584.87, 218,377.30 and 66,699.10 is: 100,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,584.87 : 218,377.30 = 66,699.10 : x
  2. Step 2: Convert to fraction form
    145,584.87/218,377.30 = 66,699.10/x
  3. Step 3: Cross multiply
    145,584.87x = 218,377.30 × 66,699.10
  4. Step 4: Simplify right side
    145,584.87x = 14,565,568,654.73
  5. Step 5: Solve for x
    x = 14,565,568,654.73/145,584.87
  6. Step 6: Final answer
    x = 100,048.64

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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.