Home / 81,688-118,980

Finding the Third Proportional to 81,688 and 118,980

Calculator

Solution

The third proportional to 81,688 and 118,980 is: 173,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688 : 118,980 = 118,980 : x
  2. Step 2: Convert to fraction form
    81,688/118,980 = 118,980/x
  3. Step 3: Cross multiply
    81,688x = 118,980 × 118,980
  4. Step 4: Simplify right side
    81,688x = 14,156,240,400
  5. Step 5: Solve for x
    x = 14,156,240,400/81,688
  6. Step 6: Final answer
    x = 173,296.45

Related Problems

Find third proportional to 40,844 and 59,490
Half scale
Find third proportional to 163,376 and 237,960
Double scale
Find third proportional to 81,690 and 118,983
Similar ratio
Find third proportional to 122,532 and 178,470
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.