Home / 212,034.22-318,050.68-85,672.97

Finding the Fourth Proportional to 212,034.22, 318,050.68 and 85,672.97

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Solution

The fourth proportional to 212,034.22, 318,050.68 and 85,672.97 is: 128,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,034.22 : 318,050.68 = 85,672.97 : x
  2. Step 2: Convert to fraction form
    212,034.22/318,050.68 = 85,672.97/x
  3. Step 3: Cross multiply
    212,034.22x = 318,050.68 × 85,672.97
  4. Step 4: Simplify right side
    212,034.22x = 27,248,347,334.35
  5. Step 5: Solve for x
    x = 27,248,347,334.35/212,034.22
  6. Step 6: Final answer
    x = 128,509.20

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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.