Home / 208,640.16-312,881.66-75,487.50

Finding the Fourth Proportional to 208,640.16, 312,881.66 and 75,487.50

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Solution

The fourth proportional to 208,640.16, 312,881.66 and 75,487.50 is: 113,202.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,640.16 : 312,881.66 = 75,487.50 : x
  2. Step 2: Convert to fraction form
    208,640.16/312,881.66 = 75,487.50/x
  3. Step 3: Cross multiply
    208,640.16x = 312,881.66 × 75,487.50
  4. Step 4: Simplify right side
    208,640.16x = 23,618,654,309.25
  5. Step 5: Solve for x
    x = 23,618,654,309.25/208,640.16
  6. Step 6: Final answer
    x = 113,202.82

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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.