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Finding the Fourth Proportional to 212,076.41, 318,106.30 and 71,835.03

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Solution

The fourth proportional to 212,076.41, 318,106.30 and 71,835.03 is: 107,749.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,076.41 : 318,106.30 = 71,835.03 : x
  2. Step 2: Convert to fraction form
    212,076.41/318,106.30 = 71,835.03/x
  3. Step 3: Cross multiply
    212,076.41x = 318,106.30 × 71,835.03
  4. Step 4: Simplify right side
    212,076.41x = 22,851,173,653.98
  5. Step 5: Solve for x
    x = 22,851,173,653.98/212,076.41
  6. Step 6: Final answer
    x = 107,749.72

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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.