Home / 126,035.69-189,109.11-66,856.83

Finding the Fourth Proportional to 126,035.69, 189,109.11 and 66,856.83

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Solution

The fourth proportional to 126,035.69, 189,109.11 and 66,856.83 is: 100,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,035.69 : 189,109.11 = 66,856.83 : x
  2. Step 2: Convert to fraction form
    126,035.69/189,109.11 = 66,856.83/x
  3. Step 3: Cross multiply
    126,035.69x = 189,109.11 × 66,856.83
  4. Step 4: Simplify right side
    126,035.69x = 12,643,235,618.72
  5. Step 5: Solve for x
    x = 12,643,235,618.72/126,035.69
  6. Step 6: Final answer
    x = 100,314.73

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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.