Home / 212,075.14-318,339.30-85,797.91

Finding the Fourth Proportional to 212,075.14, 318,339.30 and 85,797.91

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Solution

The fourth proportional to 212,075.14, 318,339.30 and 85,797.91 is: 128,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,075.14 : 318,339.30 = 85,797.91 : x
  2. Step 2: Convert to fraction form
    212,075.14/318,339.30 = 85,797.91/x
  3. Step 3: Cross multiply
    212,075.14x = 318,339.30 × 85,797.91
  4. Step 4: Simplify right side
    212,075.14x = 27,312,846,314.55
  5. Step 5: Solve for x
    x = 27,312,846,314.55/212,075.14
  6. Step 6: Final answer
    x = 128,788.54

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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.