Home / 138,744.54-208,032.53-54,403.65

Finding the Fourth Proportional to 138,744.54, 208,032.53 and 54,403.65

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Solution

The fourth proportional to 138,744.54, 208,032.53 and 54,403.65 is: 81,572.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,744.54 : 208,032.53 = 54,403.65 : x
  2. Step 2: Convert to fraction form
    138,744.54/208,032.53 = 54,403.65/x
  3. Step 3: Cross multiply
    138,744.54x = 208,032.53 × 54,403.65
  4. Step 4: Simplify right side
    138,744.54x = 11,317,728,678.72
  5. Step 5: Solve for x
    x = 11,317,728,678.72/138,744.54
  6. Step 6: Final answer
    x = 81,572.43

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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.