Home / 240,123.78-331,383.57-138,164.73

Finding the Fourth Proportional to 240,123.78, 331,383.57 and 138,164.73

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Solution

The fourth proportional to 240,123.78, 331,383.57 and 138,164.73 is: 190,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,123.78 : 331,383.57 = 138,164.73 : x
  2. Step 2: Convert to fraction form
    240,123.78/331,383.57 = 138,164.73/x
  3. Step 3: Cross multiply
    240,123.78x = 331,383.57 × 138,164.73
  4. Step 4: Simplify right side
    240,123.78x = 45,785,521,475.49
  5. Step 5: Solve for x
    x = 45,785,521,475.49/240,123.78
  6. Step 6: Final answer
    x = 190,674.67

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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.