Home / 154,353.35-212,940.04-90,662.44

Finding the Fourth Proportional to 154,353.35, 212,940.04 and 90,662.44

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Solution

The fourth proportional to 154,353.35, 212,940.04 and 90,662.44 is: 125,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,353.35 : 212,940.04 = 90,662.44 : x
  2. Step 2: Convert to fraction form
    154,353.35/212,940.04 = 90,662.44/x
  3. Step 3: Cross multiply
    154,353.35x = 212,940.04 × 90,662.44
  4. Step 4: Simplify right side
    154,353.35x = 19,305,663,600.10
  5. Step 5: Solve for x
    x = 19,305,663,600.10/154,353.35
  6. Step 6: Final answer
    x = 125,074.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.