Home / 208,280.72-312,356.50-75,143.67

Finding the Fourth Proportional to 208,280.72, 312,356.50 and 75,143.67

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Solution

The fourth proportional to 208,280.72, 312,356.50 and 75,143.67 is: 112,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,280.72 : 312,356.50 = 75,143.67 : x
  2. Step 2: Convert to fraction form
    208,280.72/312,356.50 = 75,143.67/x
  3. Step 3: Cross multiply
    208,280.72x = 312,356.50 × 75,143.67
  4. Step 4: Simplify right side
    208,280.72x = 23,471,613,382.64
  5. Step 5: Solve for x
    x = 23,471,613,382.64/208,280.72
  6. Step 6: Final answer
    x = 112,692.21

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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.