Home / 212,150.67-318,142.63-77,182.66

Finding the Fourth Proportional to 212,150.67, 318,142.63 and 77,182.66

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Solution

The fourth proportional to 212,150.67, 318,142.63 and 77,182.66 is: 115,743.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,150.67 : 318,142.63 = 77,182.66 : x
  2. Step 2: Convert to fraction form
    212,150.67/318,142.63 = 77,182.66/x
  3. Step 3: Cross multiply
    212,150.67x = 318,142.63 × 77,182.66
  4. Step 4: Simplify right side
    212,150.67x = 24,555,094,442.80
  5. Step 5: Solve for x
    x = 24,555,094,442.80/212,150.67
  6. Step 6: Final answer
    x = 115,743.66

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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.