Home / 130,000-179,400-70,384

Finding the Fourth Proportional to 130,000, 179,400 and 70,384

Calculator

Solution

The fourth proportional to 130,000, 179,400 and 70,384 is: 97,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,000 : 179,400 = 70,384 : x
  2. Step 2: Convert to fraction form
    130,000/179,400 = 70,384/x
  3. Step 3: Cross multiply
    130,000x = 179,400 × 70,384
  4. Step 4: Simplify right side
    130,000x = 12,626,889,600
  5. Step 5: Solve for x
    x = 12,626,889,600/130,000
  6. Step 6: Final answer
    x = 97,129.92

Related Problems

Find fourth proportional to 65,000, 89,700 and 35,192
Half scale
Find fourth proportional to 260,000, 358,800 and 140,768
Double scale
Find fourth proportional to 130,001, 179,401.38 and 70,385
Similar ratio
Find fourth proportional to 195,000, 269,100 and 105,576
1.5x scale

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.