Home / 154,356.37-212,944.17-90,665.44

Finding the Fourth Proportional to 154,356.37, 212,944.17 and 90,665.44

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Solution

The fourth proportional to 154,356.37, 212,944.17 and 90,665.44 is: 125,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,356.37 : 212,944.17 = 90,665.44 : x
  2. Step 2: Convert to fraction form
    154,356.37/212,944.17 = 90,665.44/x
  3. Step 3: Cross multiply
    154,356.37x = 212,944.17 × 90,665.44
  4. Step 4: Simplify right side
    154,356.37x = 19,306,676,868.48
  5. Step 5: Solve for x
    x = 19,306,676,868.48/154,356.37
  6. Step 6: Final answer
    x = 125,078.59

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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.