Home / 154,355.37-212,942.79-90,664.44

Finding the Fourth Proportional to 154,355.37, 212,942.79 and 90,664.44

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Solution

The fourth proportional to 154,355.37, 212,942.79 and 90,664.44 is: 125,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,355.37 : 212,942.79 = 90,664.44 : x
  2. Step 2: Convert to fraction form
    154,355.37/212,942.79 = 90,664.44/x
  3. Step 3: Cross multiply
    154,355.37x = 212,942.79 × 90,664.44
  4. Step 4: Simplify right side
    154,355.37x = 19,306,338,807.39
  5. Step 5: Solve for x
    x = 19,306,338,807.39/154,355.37
  6. Step 6: Final answer
    x = 125,077.21

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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.