Home / 138,815.44-208,223.08-45,321.19

Finding the Fourth Proportional to 138,815.44, 208,223.08 and 45,321.19

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Solution

The fourth proportional to 138,815.44, 208,223.08 and 45,321.19 is: 67,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,815.44 : 208,223.08 = 45,321.19 : x
  2. Step 2: Convert to fraction form
    138,815.44/208,223.08 = 45,321.19/x
  3. Step 3: Cross multiply
    138,815.44x = 208,223.08 × 45,321.19
  4. Step 4: Simplify right side
    138,815.44x = 9,436,917,771.07
  5. Step 5: Solve for x
    x = 9,436,917,771.07/138,815.44
  6. Step 6: Final answer
    x = 67,981.76

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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.