Home / 129,368.48-178,555.05-75,666.69

Finding the Fourth Proportional to 129,368.48, 178,555.05 and 75,666.69

Calculator

Solution

The fourth proportional to 129,368.48, 178,555.05 and 75,666.69 is: 104,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,368.48 : 178,555.05 = 75,666.69 : x
  2. Step 2: Convert to fraction form
    129,368.48/178,555.05 = 75,666.69/x
  3. Step 3: Cross multiply
    129,368.48x = 178,555.05 × 75,666.69
  4. Step 4: Simplify right side
    129,368.48x = 13,510,669,616.28
  5. Step 5: Solve for x
    x = 13,510,669,616.28/129,368.48
  6. Step 6: Final answer
    x = 104,435.56

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.