Home / 126,171.70-189,257.55-103,621.30

Finding the Fourth Proportional to 126,171.70, 189,257.55 and 103,621.30

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Solution

The fourth proportional to 126,171.70, 189,257.55 and 103,621.30 is: 155,431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,171.70 : 189,257.55 = 103,621.30 : x
  2. Step 2: Convert to fraction form
    126,171.70/189,257.55 = 103,621.30/x
  3. Step 3: Cross multiply
    126,171.70x = 189,257.55 × 103,621.30
  4. Step 4: Simplify right side
    126,171.70x = 19,611,113,365.82
  5. Step 5: Solve for x
    x = 19,611,113,365.82/126,171.70
  6. Step 6: Final answer
    x = 155,431.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.