Home / 87,430.50-128,276.25

Finding the Third Proportional to 87,430.50 and 128,276.25

Calculator

Solution

The third proportional to 87,430.50 and 128,276.25 is: 188,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.50 : 128,276.25 = 128,276.25 : x
  2. Step 2: Convert to fraction form
    87,430.50/128,276.25 = 128,276.25/x
  3. Step 3: Cross multiply
    87,430.50x = 128,276.25 × 128,276.25
  4. Step 4: Simplify right side
    87,430.50x = 16,454,796,314.06
  5. Step 5: Solve for x
    x = 16,454,796,314.06/87,430.50
  6. Step 6: Final answer
    x = 188,204.30

Related Problems

Find third proportional to 43,715.25 and 64,138.13
Half scale
Find third proportional to 174,861 and 256,552.50
Double scale
Find third proportional to 87,433 and 128,279
Similar ratio
Find third proportional to 131,145.75 and 192,414.38
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.