Home / 66,681-145,345.50

Finding the Third Proportional to 66,681 and 145,345.50

Calculator

Solution

The third proportional to 66,681 and 145,345.50 is: 316,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,681 : 145,345.50 = 145,345.50 : x
  2. Step 2: Convert to fraction form
    66,681/145,345.50 = 145,345.50/x
  3. Step 3: Cross multiply
    66,681x = 145,345.50 × 145,345.50
  4. Step 4: Simplify right side
    66,681x = 21,125,314,370.25
  5. Step 5: Solve for x
    x = 21,125,314,370.25/66,681
  6. Step 6: Final answer
    x = 316,811.60

Related Problems

Find third proportional to 33,340.50 and 72,672.75
Half scale
Find third proportional to 133,362 and 290,691
Double scale
Find third proportional to 66,683 and 145,350
Similar ratio
Find third proportional to 100,021.50 and 218,018.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.