Home / 135,096.32-186,456-78,540.48

Finding the Fourth Proportional to 135,096.32, 186,456 and 78,540.48

Calculator

Solution

The fourth proportional to 135,096.32, 186,456 and 78,540.48 is: 108,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,096.32 : 186,456 = 78,540.48 : x
  2. Step 2: Convert to fraction form
    135,096.32/186,456 = 78,540.48/x
  3. Step 3: Cross multiply
    135,096.32x = 186,456 × 78,540.48
  4. Step 4: Simplify right side
    135,096.32x = 14,644,343,738.88
  5. Step 5: Solve for x
    x = 14,644,343,738.88/135,096.32
  6. Step 6: Final answer
    x = 108,399.28

Related Problems

Find fourth proportional to 67,548.16, 93,228 and 39,270.24
Half scale
Find fourth proportional to 270,192.64, 372,912 and 157,080.96
Double scale
Find fourth proportional to 135,097.32, 186,457.38 and 78,541.48
Similar ratio
Find fourth proportional to 202,644.48, 279,684 and 117,810.72
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.