Home / 212,475.37-318,512.70-105,758.42

Finding the Fourth Proportional to 212,475.37, 318,512.70 and 105,758.42

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Solution

The fourth proportional to 212,475.37, 318,512.70 and 105,758.42 is: 158,537.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,475.37 : 318,512.70 = 105,758.42 : x
  2. Step 2: Convert to fraction form
    212,475.37/318,512.70 = 105,758.42/x
  3. Step 3: Cross multiply
    212,475.37x = 318,512.70 × 105,758.42
  4. Step 4: Simplify right side
    212,475.37x = 33,685,399,901.93
  5. Step 5: Solve for x
    x = 33,685,399,901.93/212,475.37
  6. Step 6: Final answer
    x = 158,537.91

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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.