Home / 212,639.34-318,900.69-79,475.34

Finding the Fourth Proportional to 212,639.34, 318,900.69 and 79,475.34

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Solution

The fourth proportional to 212,639.34, 318,900.69 and 79,475.34 is: 119,191.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,639.34 : 318,900.69 = 79,475.34 : x
  2. Step 2: Convert to fraction form
    212,639.34/318,900.69 = 79,475.34/x
  3. Step 3: Cross multiply
    212,639.34x = 318,900.69 × 79,475.34
  4. Step 4: Simplify right side
    212,639.34x = 25,344,740,763.98
  5. Step 5: Solve for x
    x = 25,344,740,763.98/212,639.34
  6. Step 6: Final answer
    x = 119,191.21

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1.5x scale

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.