Home / 77,409-169,641

Finding the Third Proportional to 77,409 and 169,641

Calculator

Solution

The third proportional to 77,409 and 169,641 is: 371,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,409 : 169,641 = 169,641 : x
  2. Step 2: Convert to fraction form
    77,409/169,641 = 169,641/x
  3. Step 3: Cross multiply
    77,409x = 169,641 × 169,641
  4. Step 4: Simplify right side
    77,409x = 28,778,068,881
  5. Step 5: Solve for x
    x = 28,778,068,881/77,409
  6. Step 6: Final answer
    x = 371,766.45

Related Problems

Find third proportional to 38,704.50 and 84,820.50
Half scale
Find third proportional to 154,818 and 339,282
Double scale
Find third proportional to 77,411 and 169,645
Similar ratio
Find third proportional to 116,113.50 and 254,461.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.