Home / 128,706.80-193,060.20-109,072.40

Finding the Fourth Proportional to 128,706.80, 193,060.20 and 109,072.40

Calculator

Solution

The fourth proportional to 128,706.80, 193,060.20 and 109,072.40 is: 163,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,706.80 : 193,060.20 = 109,072.40 : x
  2. Step 2: Convert to fraction form
    128,706.80/193,060.20 = 109,072.40/x
  3. Step 3: Cross multiply
    128,706.80x = 193,060.20 × 109,072.40
  4. Step 4: Simplify right side
    128,706.80x = 21,057,539,358.48
  5. Step 5: Solve for x
    x = 21,057,539,358.48/128,706.80
  6. Step 6: Final answer
    x = 163,608.60

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.