Home / 78,457.50-189,117

Finding the Third Proportional to 78,457.50 and 189,117

Calculator

Solution

The third proportional to 78,457.50 and 189,117 is: 455,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.50 : 189,117 = 189,117 : x
  2. Step 2: Convert to fraction form
    78,457.50/189,117 = 189,117/x
  3. Step 3: Cross multiply
    78,457.50x = 189,117 × 189,117
  4. Step 4: Simplify right side
    78,457.50x = 35,765,239,689
  5. Step 5: Solve for x
    x = 35,765,239,689/78,457.50
  6. Step 6: Final answer
    x = 455,854.95

Related Problems

Find third proportional to 39,228.75 and 94,558.50
Half scale
Find third proportional to 156,915 and 378,234
Double scale
Find third proportional to 78,460 and 189,122
Similar ratio
Find third proportional to 117,686.25 and 283,675.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.