Home / 154,054.26-212,519.04-103,078.35

Finding the Fourth Proportional to 154,054.26, 212,519.04 and 103,078.35

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Solution

The fourth proportional to 154,054.26, 212,519.04 and 103,078.35 is: 142,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,054.26 : 212,519.04 = 103,078.35 : x
  2. Step 2: Convert to fraction form
    154,054.26/212,519.04 = 103,078.35/x
  3. Step 3: Cross multiply
    154,054.26x = 212,519.04 × 103,078.35
  4. Step 4: Simplify right side
    154,054.26x = 21,906,111,986.78
  5. Step 5: Solve for x
    x = 21,906,111,986.78/154,054.26
  6. Step 6: Final answer
    x = 142,197.38

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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.