Home / 129,785.60-194,678.40-79,703.30

Finding the Fourth Proportional to 129,785.60, 194,678.40 and 79,703.30

Calculator

Solution

The fourth proportional to 129,785.60, 194,678.40 and 79,703.30 is: 119,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,785.60 : 194,678.40 = 79,703.30 : x
  2. Step 2: Convert to fraction form
    129,785.60/194,678.40 = 79,703.30/x
  3. Step 3: Cross multiply
    129,785.60x = 194,678.40 × 79,703.30
  4. Step 4: Simplify right side
    129,785.60x = 15,516,510,918.72
  5. Step 5: Solve for x
    x = 15,516,510,918.72/129,785.60
  6. Step 6: Final answer
    x = 119,554.95

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.