Home / 212,146.11-318,101.31-98,169.39

Finding the Fourth Proportional to 212,146.11, 318,101.31 and 98,169.39

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Solution

The fourth proportional to 212,146.11, 318,101.31 and 98,169.39 is: 147,199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,146.11 : 318,101.31 = 98,169.39 : x
  2. Step 2: Convert to fraction form
    212,146.11/318,101.31 = 98,169.39/x
  3. Step 3: Cross multiply
    212,146.11x = 318,101.31 × 98,169.39
  4. Step 4: Simplify right side
    212,146.11x = 31,227,811,560.90
  5. Step 5: Solve for x
    x = 31,227,811,560.90/212,146.11
  6. Step 6: Final answer
    x = 147,199.55

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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.