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Finding the Fourth Proportional to 169,986.20, 255,003.60 and 57,671.60

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Solution

The fourth proportional to 169,986.20, 255,003.60 and 57,671.60 is: 86,515.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,986.20 : 255,003.60 = 57,671.60 : x
  2. Step 2: Convert to fraction form
    169,986.20/255,003.60 = 57,671.60/x
  3. Step 3: Cross multiply
    169,986.20x = 255,003.60 × 57,671.60
  4. Step 4: Simplify right side
    169,986.20x = 14,706,465,617.76
  5. Step 5: Solve for x
    x = 14,706,465,617.76/169,986.20
  6. Step 6: Final answer
    x = 86,515.64

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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.