Home / 78,750-121,607

Finding the Third Proportional to 78,750 and 121,607

Calculator

Solution

The third proportional to 78,750 and 121,607 is: 187,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750 : 121,607 = 121,607 : x
  2. Step 2: Convert to fraction form
    78,750/121,607 = 121,607/x
  3. Step 3: Cross multiply
    78,750x = 121,607 × 121,607
  4. Step 4: Simplify right side
    78,750x = 14,788,262,449
  5. Step 5: Solve for x
    x = 14,788,262,449/78,750
  6. Step 6: Final answer
    x = 187,787.46

Related Problems

Find third proportional to 39,375 and 60,803.50
Half scale
Find third proportional to 157,500 and 243,214
Double scale
Find third proportional to 78,752 and 121,610
Similar ratio
Find third proportional to 118,125 and 182,410.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.