Home / 187,308-258,486.12-120,240

Finding the Fourth Proportional to 187,308, 258,486.12 and 120,240

Calculator

Solution

The fourth proportional to 187,308, 258,486.12 and 120,240 is: 165,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,308 : 258,486.12 = 120,240 : x
  2. Step 2: Convert to fraction form
    187,308/258,486.12 = 120,240/x
  3. Step 3: Cross multiply
    187,308x = 258,486.12 × 120,240
  4. Step 4: Simplify right side
    187,308x = 31,080,371,068.80
  5. Step 5: Solve for x
    x = 31,080,371,068.80/187,308
  6. Step 6: Final answer
    x = 165,931.89

Related Problems

Find fourth proportional to 93,654, 129,243.06 and 60,120
Half scale
Find fourth proportional to 374,616, 516,972.24 and 240,480
Double scale
Find fourth proportional to 187,309, 258,487.50 and 120,241
Similar ratio
Find fourth proportional to 280,962, 387,729.18 and 180,360
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.