Home / 208,319.07-312,493.32-103,109.79

Finding the Fourth Proportional to 208,319.07, 312,493.32 and 103,109.79

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Solution

The fourth proportional to 208,319.07, 312,493.32 and 103,109.79 is: 154,671.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,319.07 : 312,493.32 = 103,109.79 : x
  2. Step 2: Convert to fraction form
    208,319.07/312,493.32 = 103,109.79/x
  3. Step 3: Cross multiply
    208,319.07x = 312,493.32 × 103,109.79
  4. Step 4: Simplify right side
    208,319.07x = 32,221,120,601.60
  5. Step 5: Solve for x
    x = 32,221,120,601.60/208,319.07
  6. Step 6: Final answer
    x = 154,671.97

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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.