Home / 208,279.72-312,355.00-75,142.67

Finding the Fourth Proportional to 208,279.72, 312,355.00 and 75,142.67

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Solution

The fourth proportional to 208,279.72, 312,355.00 and 75,142.67 is: 112,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,279.72 : 312,355.00 = 75,142.67 : x
  2. Step 2: Convert to fraction form
    208,279.72/312,355.00 = 75,142.67/x
  3. Step 3: Cross multiply
    208,279.72x = 312,355.00 × 75,142.67
  4. Step 4: Simplify right side
    208,279.72x = 23,471,188,312.14
  5. Step 5: Solve for x
    x = 23,471,188,312.14/208,279.72
  6. Step 6: Final answer
    x = 112,690.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.