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Finding the Fourth Proportional to 171,845.40, 257,768.10 and 118,701.30

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Solution

The fourth proportional to 171,845.40, 257,768.10 and 118,701.30 is: 178,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,845.40 : 257,768.10 = 118,701.30 : x
  2. Step 2: Convert to fraction form
    171,845.40/257,768.10 = 118,701.30/x
  3. Step 3: Cross multiply
    171,845.40x = 257,768.10 × 118,701.30
  4. Step 4: Simplify right side
    171,845.40x = 30,597,408,568.53
  5. Step 5: Solve for x
    x = 30,597,408,568.53/171,845.40
  6. Step 6: Final answer
    x = 178,051.95

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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.