Home / 109,666.56-151,339.92-61,920

Finding the Fourth Proportional to 109,666.56, 151,339.92 and 61,920

Calculator

Solution

The fourth proportional to 109,666.56, 151,339.92 and 61,920 is: 85,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,666.56 : 151,339.92 = 61,920 : x
  2. Step 2: Convert to fraction form
    109,666.56/151,339.92 = 61,920/x
  3. Step 3: Cross multiply
    109,666.56x = 151,339.92 × 61,920
  4. Step 4: Simplify right side
    109,666.56x = 9,370,967,846.40
  5. Step 5: Solve for x
    x = 9,370,967,846.40/109,666.56
  6. Step 6: Final answer
    x = 85,449.64

Related Problems

Find fourth proportional to 54,833.28, 75,669.96 and 30,960
Half scale
Find fourth proportional to 219,333.12, 302,679.84 and 123,840
Double scale
Find fourth proportional to 109,667.56, 151,341.30 and 61,921
Similar ratio
Find fourth proportional to 164,499.84, 227,009.88 and 92,880
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.