Home / 154,338.25-213,014.09-90,676.03

Finding the Fourth Proportional to 154,338.25, 213,014.09 and 90,676.03

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Solution

The fourth proportional to 154,338.25, 213,014.09 and 90,676.03 is: 125,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,338.25 : 213,014.09 = 90,676.03 : x
  2. Step 2: Convert to fraction form
    154,338.25/213,014.09 = 90,676.03/x
  3. Step 3: Cross multiply
    154,338.25x = 213,014.09 × 90,676.03
  4. Step 4: Simplify right side
    154,338.25x = 19,315,271,561.88
  5. Step 5: Solve for x
    x = 19,315,271,561.88/154,338.25
  6. Step 6: Final answer
    x = 125,148.96

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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.