Home / 154,940.32-213,824.64-121,348

Finding the Fourth Proportional to 154,940.32, 213,824.64 and 121,348

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Solution

The fourth proportional to 154,940.32, 213,824.64 and 121,348 is: 167,465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,940.32 : 213,824.64 = 121,348 : x
  2. Step 2: Convert to fraction form
    154,940.32/213,824.64 = 121,348/x
  3. Step 3: Cross multiply
    154,940.32x = 213,824.64 × 121,348
  4. Step 4: Simplify right side
    154,940.32x = 25,947,192,414.72
  5. Step 5: Solve for x
    x = 25,947,192,414.72/154,940.32
  6. Step 6: Final answer
    x = 167,465.72

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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.