Home / 212,019.60-318,027.16-54,246.80

Finding the Fourth Proportional to 212,019.60, 318,027.16 and 54,246.80

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Solution

The fourth proportional to 212,019.60, 318,027.16 and 54,246.80 is: 81,369.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,019.60 : 318,027.16 = 54,246.80 : x
  2. Step 2: Convert to fraction form
    212,019.60/318,027.16 = 54,246.80/x
  3. Step 3: Cross multiply
    212,019.60x = 318,027.16 × 54,246.80
  4. Step 4: Simplify right side
    212,019.60x = 17,251,955,743.09
  5. Step 5: Solve for x
    x = 17,251,955,743.09/212,019.60
  6. Step 6: Final answer
    x = 81,369.63

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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.