Home / 138,669.72-208,099.62-49,923.96

Finding the Fourth Proportional to 138,669.72, 208,099.62 and 49,923.96

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Solution

The fourth proportional to 138,669.72, 208,099.62 and 49,923.96 is: 74,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,669.72 : 208,099.62 = 49,923.96 : x
  2. Step 2: Convert to fraction form
    138,669.72/208,099.62 = 49,923.96/x
  3. Step 3: Cross multiply
    138,669.72x = 208,099.62 × 49,923.96
  4. Step 4: Simplify right side
    138,669.72x = 10,389,157,104.90
  5. Step 5: Solve for x
    x = 10,389,157,104.90/138,669.72
  6. Step 6: Final answer
    x = 74,920.16

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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.