Home / 208,234.08-312,479.64-81,852.21

Finding the Fourth Proportional to 208,234.08, 312,479.64 and 81,852.21

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Solution

The fourth proportional to 208,234.08, 312,479.64 and 81,852.21 is: 122,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,234.08 : 312,479.64 = 81,852.21 : x
  2. Step 2: Convert to fraction form
    208,234.08/312,479.64 = 81,852.21/x
  3. Step 3: Cross multiply
    208,234.08x = 312,479.64 × 81,852.21
  4. Step 4: Simplify right side
    208,234.08x = 25,577,149,114.00
  5. Step 5: Solve for x
    x = 25,577,149,114.00/208,234.08
  6. Step 6: Final answer
    x = 122,828.83

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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.