Home / 210,364.20-315,449.10-91,974.60

Finding the Fourth Proportional to 210,364.20, 315,449.10 and 91,974.60

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Solution

The fourth proportional to 210,364.20, 315,449.10 and 91,974.60 is: 137,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,364.20 : 315,449.10 = 91,974.60 : x
  2. Step 2: Convert to fraction form
    210,364.20/315,449.10 = 91,974.60/x
  3. Step 3: Cross multiply
    210,364.20x = 315,449.10 × 91,974.60
  4. Step 4: Simplify right side
    210,364.20x = 29,013,304,792.86
  5. Step 5: Solve for x
    x = 29,013,304,792.86/210,364.20
  6. Step 6: Final answer
    x = 137,919.40

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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.