Home / 216,120.45-298,218.70-120,631.17

Finding the Fourth Proportional to 216,120.45, 298,218.70 and 120,631.17

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Solution

The fourth proportional to 216,120.45, 298,218.70 and 120,631.17 is: 166,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,120.45 : 298,218.70 = 120,631.17 : x
  2. Step 2: Convert to fraction form
    216,120.45/298,218.70 = 120,631.17/x
  3. Step 3: Cross multiply
    216,120.45x = 298,218.70 × 120,631.17
  4. Step 4: Simplify right side
    216,120.45x = 35,974,470,696.88
  5. Step 5: Solve for x
    x = 35,974,470,696.88/216,120.45
  6. Step 6: Final answer
    x = 166,455.65

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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.