Home / 128,415.38-192,710.54-45,309.38

Finding the Fourth Proportional to 128,415.38, 192,710.54 and 45,309.38

Calculator

Solution

The fourth proportional to 128,415.38, 192,710.54 and 45,309.38 is: 67,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,415.38 : 192,710.54 = 45,309.38 : x
  2. Step 2: Convert to fraction form
    128,415.38/192,710.54 = 45,309.38/x
  3. Step 3: Cross multiply
    128,415.38x = 192,710.54 × 45,309.38
  4. Step 4: Simplify right side
    128,415.38x = 8,731,594,236.59
  5. Step 5: Solve for x
    x = 8,731,594,236.59/128,415.38
  6. Step 6: Final answer
    x = 67,994.93

Related Problems

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.