Home / 154,975.36-213,864-91,315.84

Finding the Fourth Proportional to 154,975.36, 213,864 and 91,315.84

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Solution

The fourth proportional to 154,975.36, 213,864 and 91,315.84 is: 126,014.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,975.36 : 213,864 = 91,315.84 : x
  2. Step 2: Convert to fraction form
    154,975.36/213,864 = 91,315.84/x
  3. Step 3: Cross multiply
    154,975.36x = 213,864 × 91,315.84
  4. Step 4: Simplify right side
    154,975.36x = 19,529,170,805.76
  5. Step 5: Solve for x
    x = 19,529,170,805.76/154,975.36
  6. Step 6: Final answer
    x = 126,014.68

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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.