Home / 138,831.40-208,244.67-54,600.31

Finding the Fourth Proportional to 138,831.40, 208,244.67 and 54,600.31

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Solution

The fourth proportional to 138,831.40, 208,244.67 and 54,600.31 is: 81,899.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,831.40 : 208,244.67 = 54,600.31 : x
  2. Step 2: Convert to fraction form
    138,831.40/208,244.67 = 54,600.31/x
  3. Step 3: Cross multiply
    138,831.40x = 208,244.67 × 54,600.31
  4. Step 4: Simplify right side
    138,831.40x = 11,370,223,537.85
  5. Step 5: Solve for x
    x = 11,370,223,537.85/138,831.40
  6. Step 6: Final answer
    x = 81,899.51

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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.