Home / 208,385.42-312,621.32-83,736.14

Finding the Fourth Proportional to 208,385.42, 312,621.32 and 83,736.14

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Solution

The fourth proportional to 208,385.42, 312,621.32 and 83,736.14 is: 125,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,385.42 : 312,621.32 = 83,736.14 : x
  2. Step 2: Convert to fraction form
    208,385.42/312,621.32 = 83,736.14/x
  3. Step 3: Cross multiply
    208,385.42x = 312,621.32 × 83,736.14
  4. Step 4: Simplify right side
    208,385.42x = 26,177,702,618.50
  5. Step 5: Solve for x
    x = 26,177,702,618.50/208,385.42
  6. Step 6: Final answer
    x = 125,621.57

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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.