Home / 138,549.48-207,816.75-54,324.78

Finding the Fourth Proportional to 138,549.48, 207,816.75 and 54,324.78

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Solution

The fourth proportional to 138,549.48, 207,816.75 and 54,324.78 is: 81,484.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,549.48 : 207,816.75 = 54,324.78 : x
  2. Step 2: Convert to fraction form
    138,549.48/207,816.75 = 54,324.78/x
  3. Step 3: Cross multiply
    138,549.48x = 207,816.75 × 54,324.78
  4. Step 4: Simplify right side
    138,549.48x = 11,289,599,224.07
  5. Step 5: Solve for x
    x = 11,289,599,224.07/138,549.48
  6. Step 6: Final answer
    x = 81,484.24

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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.