Home / 91,415-138,887

Finding the Third Proportional to 91,415 and 138,887

Calculator

Solution

The third proportional to 91,415 and 138,887 is: 211,011.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,415 : 138,887 = 138,887 : x
  2. Step 2: Convert to fraction form
    91,415/138,887 = 138,887/x
  3. Step 3: Cross multiply
    91,415x = 138,887 × 138,887
  4. Step 4: Simplify right side
    91,415x = 19,289,598,769
  5. Step 5: Solve for x
    x = 19,289,598,769/91,415
  6. Step 6: Final answer
    x = 211,011.31

Related Problems

Find third proportional to 45,707.50 and 69,443.50
Half scale
Find third proportional to 182,830 and 277,774
Double scale
Find third proportional to 91,417 and 138,890
Similar ratio
Find third proportional to 137,122.50 and 208,330.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.