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Finding the Fourth Proportional to 170,464.56, 255,813.48 and 87,416.88

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Solution

The fourth proportional to 170,464.56, 255,813.48 and 87,416.88 is: 131,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,464.56 : 255,813.48 = 87,416.88 : x
  2. Step 2: Convert to fraction form
    170,464.56/255,813.48 = 87,416.88/x
  3. Step 3: Cross multiply
    170,464.56x = 255,813.48 × 87,416.88
  4. Step 4: Simplify right side
    170,464.56x = 22,362,416,283.54
  5. Step 5: Solve for x
    x = 22,362,416,283.54/170,464.56
  6. Step 6: Final answer
    x = 131,185.13

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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.