Home / 101,375.38-139,900.97-55,437.72

Finding the Fourth Proportional to 101,375.38, 139,900.97 and 55,437.72

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Solution

The fourth proportional to 101,375.38, 139,900.97 and 55,437.72 is: 76,505.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,375.38 : 139,900.97 = 55,437.72 : x
  2. Step 2: Convert to fraction form
    101,375.38/139,900.97 = 55,437.72/x
  3. Step 3: Cross multiply
    101,375.38x = 139,900.97 × 55,437.72
  4. Step 4: Simplify right side
    101,375.38x = 7,755,791,596.97
  5. Step 5: Solve for x
    x = 7,755,791,596.97/101,375.38
  6. Step 6: Final answer
    x = 76,505.67

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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.