Home / 212,003.12-318,113.62-117,215.70

Finding the Fourth Proportional to 212,003.12, 318,113.62 and 117,215.70

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Solution

The fourth proportional to 212,003.12, 318,113.62 and 117,215.70 is: 175,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,003.12 : 318,113.62 = 117,215.70 : x
  2. Step 2: Convert to fraction form
    212,003.12/318,113.62 = 117,215.70/x
  3. Step 3: Cross multiply
    212,003.12x = 318,113.62 × 117,215.70
  4. Step 4: Simplify right side
    212,003.12x = 37,287,910,647.83
  5. Step 5: Solve for x
    x = 37,287,910,647.83/212,003.12
  6. Step 6: Final answer
    x = 175,883.78

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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.