Home / 212,097.96-318,139.54-54,327.80

Finding the Fourth Proportional to 212,097.96, 318,139.54 and 54,327.80

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Solution

The fourth proportional to 212,097.96, 318,139.54 and 54,327.80 is: 81,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,097.96 : 318,139.54 = 54,327.80 : x
  2. Step 2: Convert to fraction form
    212,097.96/318,139.54 = 54,327.80/x
  3. Step 3: Cross multiply
    212,097.96x = 318,139.54 × 54,327.80
  4. Step 4: Simplify right side
    212,097.96x = 17,283,821,301.21
  5. Step 5: Solve for x
    x = 17,283,821,301.21/212,097.96
  6. Step 6: Final answer
    x = 81,489.80

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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.