Home / 78,742.50-170,605.50

Finding the Third Proportional to 78,742.50 and 170,605.50

Calculator

Solution

The third proportional to 78,742.50 and 170,605.50 is: 369,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,742.50 : 170,605.50 = 170,605.50 : x
  2. Step 2: Convert to fraction form
    78,742.50/170,605.50 = 170,605.50/x
  3. Step 3: Cross multiply
    78,742.50x = 170,605.50 × 170,605.50
  4. Step 4: Simplify right side
    78,742.50x = 29,106,236,630.25
  5. Step 5: Solve for x
    x = 29,106,236,630.25/78,742.50
  6. Step 6: Final answer
    x = 369,638.21

Related Problems

Find third proportional to 39,371.25 and 85,302.75
Half scale
Find third proportional to 157,485 and 341,211
Double scale
Find third proportional to 78,745 and 170,610
Similar ratio
Find third proportional to 118,113.75 and 255,908.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.