Home / 212,820.20-318,971.10-94,365.80

Finding the Fourth Proportional to 212,820.20, 318,971.10 and 94,365.80

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Solution

The fourth proportional to 212,820.20, 318,971.10 and 94,365.80 is: 141,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,820.20 : 318,971.10 = 94,365.80 : x
  2. Step 2: Convert to fraction form
    212,820.20/318,971.10 = 94,365.80/x
  3. Step 3: Cross multiply
    212,820.20x = 318,971.10 × 94,365.80
  4. Step 4: Simplify right side
    212,820.20x = 30,099,963,028.38
  5. Step 5: Solve for x
    x = 30,099,963,028.38/212,820.20
  6. Step 6: Final answer
    x = 141,433.77

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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.