Home / 138,853.81-208,237.66-50,095.78

Finding the Fourth Proportional to 138,853.81, 208,237.66 and 50,095.78

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Solution

The fourth proportional to 138,853.81, 208,237.66 and 50,095.78 is: 75,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,853.81 : 208,237.66 = 50,095.78 : x
  2. Step 2: Convert to fraction form
    138,853.81/208,237.66 = 50,095.78/x
  3. Step 3: Cross multiply
    138,853.81x = 208,237.66 × 50,095.78
  4. Step 4: Simplify right side
    138,853.81x = 10,431,828,003.07
  5. Step 5: Solve for x
    x = 10,431,828,003.07/138,853.81
  6. Step 6: Final answer
    x = 75,128.14

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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.