Home / 126,421.20-189,413.10-82,025.10

Finding the Fourth Proportional to 126,421.20, 189,413.10 and 82,025.10

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Solution

The fourth proportional to 126,421.20, 189,413.10 and 82,025.10 is: 122,895.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,421.20 : 189,413.10 = 82,025.10 : x
  2. Step 2: Convert to fraction form
    126,421.20/189,413.10 = 82,025.10/x
  3. Step 3: Cross multiply
    126,421.20x = 189,413.10 × 82,025.10
  4. Step 4: Simplify right side
    126,421.20x = 15,536,628,468.81
  5. Step 5: Solve for x
    x = 15,536,628,468.81/126,421.20
  6. Step 6: Final answer
    x = 122,895.75

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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.