Home / 154,338.50-213,014.43-90,676.28

Finding the Fourth Proportional to 154,338.50, 213,014.43 and 90,676.28

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Solution

The fourth proportional to 154,338.50, 213,014.43 and 90,676.28 is: 125,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,338.50 : 213,014.43 = 90,676.28 : x
  2. Step 2: Convert to fraction form
    154,338.50/213,014.43 = 90,676.28/x
  3. Step 3: Cross multiply
    154,338.50x = 213,014.43 × 90,676.28
  4. Step 4: Simplify right side
    154,338.50x = 19,315,356,098.72
  5. Step 5: Solve for x
    x = 19,315,356,098.72/154,338.50
  6. Step 6: Final answer
    x = 125,149.31

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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.