Home / 87,358-138,547

Finding the Third Proportional to 87,358 and 138,547

Calculator

Solution

The third proportional to 87,358 and 138,547 is: 219,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,358 : 138,547 = 138,547 : x
  2. Step 2: Convert to fraction form
    87,358/138,547 = 138,547/x
  3. Step 3: Cross multiply
    87,358x = 138,547 × 138,547
  4. Step 4: Simplify right side
    87,358x = 19,195,271,209
  5. Step 5: Solve for x
    x = 19,195,271,209/87,358
  6. Step 6: Final answer
    x = 219,731.12

Related Problems

Find third proportional to 43,679 and 69,273.50
Half scale
Find third proportional to 174,716 and 277,094
Double scale
Find third proportional to 87,360 and 138,550
Similar ratio
Find third proportional to 131,037 and 207,820.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.