Home / 260,126.94-390,221.66-91,612.44

Finding the Fourth Proportional to 260,126.94, 390,221.66 and 91,612.44

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Solution

The fourth proportional to 260,126.94, 390,221.66 and 91,612.44 is: 137,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,126.94 : 390,221.66 = 91,612.44 : x
  2. Step 2: Convert to fraction form
    260,126.94/390,221.66 = 91,612.44/x
  3. Step 3: Cross multiply
    260,126.94x = 390,221.66 × 91,612.44
  4. Step 4: Simplify right side
    260,126.94x = 35,749,158,413.45
  5. Step 5: Solve for x
    x = 35,749,158,413.45/260,126.94
  6. Step 6: Final answer
    x = 137,429.67

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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.