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Finding the Fourth Proportional to 154,950.81, 213,958.16 and 126,274.69

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Solution

The fourth proportional to 154,950.81, 213,958.16 and 126,274.69 is: 174,361.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,950.81 : 213,958.16 = 126,274.69 : x
  2. Step 2: Convert to fraction form
    154,950.81/213,958.16 = 126,274.69/x
  3. Step 3: Cross multiply
    154,950.81x = 213,958.16 × 126,274.69
  4. Step 4: Simplify right side
    154,950.81x = 27,017,500,326.97
  5. Step 5: Solve for x
    x = 27,017,500,326.97/154,950.81
  6. Step 6: Final answer
    x = 174,361.79

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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.