Home / 190,578-285,867-79,770

Finding the Fourth Proportional to 190,578, 285,867 and 79,770

Calculator

Solution

The fourth proportional to 190,578, 285,867 and 79,770 is: 119,655

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,578 : 285,867 = 79,770 : x
  2. Step 2: Convert to fraction form
    190,578/285,867 = 79,770/x
  3. Step 3: Cross multiply
    190,578x = 285,867 × 79,770
  4. Step 4: Simplify right side
    190,578x = 22,803,610,590
  5. Step 5: Solve for x
    x = 22,803,610,590/190,578
  6. Step 6: Final answer
    x = 119,655

Related Problems

Find fourth proportional to 95,289, 142,933.50 and 39,885
Half scale
Find fourth proportional to 381,156, 571,734 and 159,540
Double scale
Find fourth proportional to 190,579, 285,868.50 and 79,771
Similar ratio
Find fourth proportional to 285,867, 428,800.50 and 119,655
1.5x scale

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.