Home / 154,861.37-213,783.78-103,855.52

Finding the Fourth Proportional to 154,861.37, 213,783.78 and 103,855.52

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Solution

The fourth proportional to 154,861.37, 213,783.78 and 103,855.52 is: 143,370.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,861.37 : 213,783.78 = 103,855.52 : x
  2. Step 2: Convert to fraction form
    154,861.37/213,783.78 = 103,855.52/x
  3. Step 3: Cross multiply
    154,861.37x = 213,783.78 × 103,855.52
  4. Step 4: Simplify right side
    154,861.37x = 22,202,625,639.47
  5. Step 5: Solve for x
    x = 22,202,625,639.47/154,861.37
  6. Step 6: Final answer
    x = 143,370.98

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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.