Home / 154,665.94-213,428.88-90,991.42

Finding the Fourth Proportional to 154,665.94, 213,428.88 and 90,991.42

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Solution

The fourth proportional to 154,665.94, 213,428.88 and 90,991.42 is: 125,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,665.94 : 213,428.88 = 90,991.42 : x
  2. Step 2: Convert to fraction form
    154,665.94/213,428.88 = 90,991.42/x
  3. Step 3: Cross multiply
    154,665.94x = 213,428.88 × 90,991.42
  4. Step 4: Simplify right side
    154,665.94x = 19,420,196,860.21
  5. Step 5: Solve for x
    x = 19,420,196,860.21/154,665.94
  6. Step 6: Final answer
    x = 125,562.21

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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.