Home / 208,189.20-312,092.45-75,036.87

Finding the Fourth Proportional to 208,189.20, 312,092.45 and 75,036.87

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Solution

The fourth proportional to 208,189.20, 312,092.45 and 75,036.87 is: 112,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,189.20 : 312,092.45 = 75,036.87 : x
  2. Step 2: Convert to fraction form
    208,189.20/312,092.45 = 75,036.87/x
  3. Step 3: Cross multiply
    208,189.20x = 312,092.45 × 75,036.87
  4. Step 4: Simplify right side
    208,189.20x = 23,418,440,223.45
  5. Step 5: Solve for x
    x = 23,418,440,223.45/208,189.20
  6. Step 6: Final answer
    x = 112,486.34

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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.