Home / 216,121.54-298,248.07-120,628.21

Finding the Fourth Proportional to 216,121.54, 298,248.07 and 120,628.21

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Solution

The fourth proportional to 216,121.54, 298,248.07 and 120,628.21 is: 166,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,121.54 : 298,248.07 = 120,628.21 : x
  2. Step 2: Convert to fraction form
    216,121.54/298,248.07 = 120,628.21/x
  3. Step 3: Cross multiply
    216,121.54x = 298,248.07 × 120,628.21
  4. Step 4: Simplify right side
    216,121.54x = 35,977,129,772.86
  5. Step 5: Solve for x
    x = 35,977,129,772.86/216,121.54
  6. Step 6: Final answer
    x = 166,467.12

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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.