Home / 101,203.20-139,672.26-84,177.40

Finding the Fourth Proportional to 101,203.20, 139,672.26 and 84,177.40

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Solution

The fourth proportional to 101,203.20, 139,672.26 and 84,177.40 is: 116,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,203.20 : 139,672.26 = 84,177.40 : x
  2. Step 2: Convert to fraction form
    101,203.20/139,672.26 = 84,177.40/x
  3. Step 3: Cross multiply
    101,203.20x = 139,672.26 × 84,177.40
  4. Step 4: Simplify right side
    101,203.20x = 11,757,247,278.04
  5. Step 5: Solve for x
    x = 11,757,247,278.04/101,203.20
  6. Step 6: Final answer
    x = 116,174.67

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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.