Home / 212,096.96-318,138.04-54,326.80

Finding the Fourth Proportional to 212,096.96, 318,138.04 and 54,326.80

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Solution

The fourth proportional to 212,096.96, 318,138.04 and 54,326.80 is: 81,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,096.96 : 318,138.04 = 54,326.80 : x
  2. Step 2: Convert to fraction form
    212,096.96/318,138.04 = 54,326.80/x
  3. Step 3: Cross multiply
    212,096.96x = 318,138.04 × 54,326.80
  4. Step 4: Simplify right side
    212,096.96x = 17,283,421,671.47
  5. Step 5: Solve for x
    x = 17,283,421,671.47/212,096.96
  6. Step 6: Final answer
    x = 81,488.30

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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.