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Finding the Fourth Proportional to 171,948.60, 258,017.04 and 66,771.72

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Solution

The fourth proportional to 171,948.60, 258,017.04 and 66,771.72 is: 100,194.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,948.60 : 258,017.04 = 66,771.72 : x
  2. Step 2: Convert to fraction form
    171,948.60/258,017.04 = 66,771.72/x
  3. Step 3: Cross multiply
    171,948.60x = 258,017.04 × 66,771.72
  4. Step 4: Simplify right side
    171,948.60x = 17,228,241,550.11
  5. Step 5: Solve for x
    x = 17,228,241,550.11/171,948.60
  6. Step 6: Final answer
    x = 100,194.14

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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.