Home / 208,279.37-312,354.44-75,142.32

Finding the Fourth Proportional to 208,279.37, 312,354.44 and 75,142.32

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Solution

The fourth proportional to 208,279.37, 312,354.44 and 75,142.32 is: 112,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,279.37 : 312,354.44 = 75,142.32 : x
  2. Step 2: Convert to fraction form
    208,279.37/312,354.44 = 75,142.32/x
  3. Step 3: Cross multiply
    208,279.37x = 312,354.44 × 75,142.32
  4. Step 4: Simplify right side
    208,279.37x = 23,471,036,441.32
  5. Step 5: Solve for x
    x = 23,471,036,441.32/208,279.37
  6. Step 6: Final answer
    x = 112,690.17

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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.