Home / 136,274-188,061-76,658

Finding the Fourth Proportional to 136,274, 188,061 and 76,658

Calculator

Solution

The fourth proportional to 136,274, 188,061 and 76,658 is: 105,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,274 : 188,061 = 76,658 : x
  2. Step 2: Convert to fraction form
    136,274/188,061 = 76,658/x
  3. Step 3: Cross multiply
    136,274x = 188,061 × 76,658
  4. Step 4: Simplify right side
    136,274x = 14,416,380,138
  5. Step 5: Solve for x
    x = 14,416,380,138/136,274
  6. Step 6: Final answer
    x = 105,789.66

Related Problems

Find fourth proportional to 68,137, 94,030.50 and 38,329
Half scale
Find fourth proportional to 272,548, 376,122 and 153,316
Double scale
Find fourth proportional to 136,275, 188,062.38 and 76,659
Similar ratio
Find fourth proportional to 204,411, 282,091.50 and 114,987
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.