Home / 212,364.08-318,462.89-79,171.68

Finding the Fourth Proportional to 212,364.08, 318,462.89 and 79,171.68

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Solution

The fourth proportional to 212,364.08, 318,462.89 and 79,171.68 is: 118,726.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,364.08 : 318,462.89 = 79,171.68 : x
  2. Step 2: Convert to fraction form
    212,364.08/318,462.89 = 79,171.68/x
  3. Step 3: Cross multiply
    212,364.08x = 318,462.89 × 79,171.68
  4. Step 4: Simplify right side
    212,364.08x = 25,213,241,471.32
  5. Step 5: Solve for x
    x = 25,213,241,471.32/212,364.08
  6. Step 6: Final answer
    x = 118,726.49

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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.