Home / 129,093-193,638-90,985.74

Finding the Fourth Proportional to 129,093, 193,638 and 90,985.74

Calculator

Solution

The fourth proportional to 129,093, 193,638 and 90,985.74 is: 136,477.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,093 : 193,638 = 90,985.74 : x
  2. Step 2: Convert to fraction form
    129,093/193,638 = 90,985.74/x
  3. Step 3: Cross multiply
    129,093x = 193,638 × 90,985.74
  4. Step 4: Simplify right side
    129,093x = 17,618,296,722.12
  5. Step 5: Solve for x
    x = 17,618,296,722.12/129,093
  6. Step 6: Final answer
    x = 136,477.55

Related Problems

Find fourth proportional to 64,546.50, 96,819 and 45,492.87
Half scale
Find fourth proportional to 258,186, 387,276 and 181,971.48
Double scale
Find fourth proportional to 129,094, 193,639.50 and 90,986.74
Similar ratio
Find fourth proportional to 193,639.50, 290,457 and 136,478.61
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.