Home / 78,688-118,691

Finding the Third Proportional to 78,688 and 118,691

Calculator

Solution

The third proportional to 78,688 and 118,691 is: 179,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,688 : 118,691 = 118,691 : x
  2. Step 2: Convert to fraction form
    78,688/118,691 = 118,691/x
  3. Step 3: Cross multiply
    78,688x = 118,691 × 118,691
  4. Step 4: Simplify right side
    78,688x = 14,087,553,481
  5. Step 5: Solve for x
    x = 14,087,553,481/78,688
  6. Step 6: Final answer
    x = 179,030.52

Related Problems

Find third proportional to 39,344 and 59,345.50
Half scale
Find third proportional to 157,376 and 237,382
Double scale
Find third proportional to 78,690 and 118,694
Similar ratio
Find third proportional to 118,032 and 178,036.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.