Home / 216,123.13-298,253-120,629.83

Finding the Fourth Proportional to 216,123.13, 298,253 and 120,629.83

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Solution

The fourth proportional to 216,123.13, 298,253 and 120,629.83 is: 166,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,123.13 : 298,253 = 120,629.83 : x
  2. Step 2: Convert to fraction form
    216,123.13/298,253 = 120,629.83/x
  3. Step 3: Cross multiply
    216,123.13x = 298,253 × 120,629.83
  4. Step 4: Simplify right side
    216,123.13x = 35,978,208,686.99
  5. Step 5: Solve for x
    x = 35,978,208,686.99/216,123.13
  6. Step 6: Final answer
    x = 166,470.88

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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.