Home / 212,286.96-318,420.05-79,156.82

Finding the Fourth Proportional to 212,286.96, 318,420.05 and 79,156.82

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Solution

The fourth proportional to 212,286.96, 318,420.05 and 79,156.82 is: 118,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,286.96 : 318,420.05 = 79,156.82 : x
  2. Step 2: Convert to fraction form
    212,286.96/318,420.05 = 79,156.82/x
  3. Step 3: Cross multiply
    212,286.96x = 318,420.05 × 79,156.82
  4. Step 4: Simplify right side
    212,286.96x = 25,205,116,594.36
  5. Step 5: Solve for x
    x = 25,205,116,594.36/212,286.96
  6. Step 6: Final answer
    x = 118,731.35

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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.