Home / 100,854.43-139,177.95-55,531.48

Finding the Fourth Proportional to 100,854.43, 139,177.95 and 55,531.48

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Solution

The fourth proportional to 100,854.43, 139,177.95 and 55,531.48 is: 76,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,854.43 : 139,177.95 = 55,531.48 : x
  2. Step 2: Convert to fraction form
    100,854.43/139,177.95 = 55,531.48/x
  3. Step 3: Cross multiply
    100,854.43x = 139,177.95 × 55,531.48
  4. Step 4: Simplify right side
    100,854.43x = 7,728,757,546.87
  5. Step 5: Solve for x
    x = 7,728,757,546.87/100,854.43
  6. Step 6: Final answer
    x = 76,632.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.