Home / 142,183.88-196,123.65-108,117.68

Finding the Fourth Proportional to 142,183.88, 196,123.65 and 108,117.68

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Solution

The fourth proportional to 142,183.88, 196,123.65 and 108,117.68 is: 149,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,183.88 : 196,123.65 = 108,117.68 : x
  2. Step 2: Convert to fraction form
    142,183.88/196,123.65 = 108,117.68/x
  3. Step 3: Cross multiply
    142,183.88x = 196,123.65 × 108,117.68
  4. Step 4: Simplify right side
    142,183.88x = 21,204,433,196.67
  5. Step 5: Solve for x
    x = 21,204,433,196.67/142,183.88
  6. Step 6: Final answer
    x = 149,133.87

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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.