Home / 100,827.75-139,142.35-55,507.49

Finding the Fourth Proportional to 100,827.75, 139,142.35 and 55,507.49

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Solution

The fourth proportional to 100,827.75, 139,142.35 and 55,507.49 is: 76,600.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,827.75 : 139,142.35 = 55,507.49 : x
  2. Step 2: Convert to fraction form
    100,827.75/139,142.35 = 55,507.49/x
  3. Step 3: Cross multiply
    100,827.75x = 139,142.35 × 55,507.49
  4. Step 4: Simplify right side
    100,827.75x = 7,723,442,601.20
  5. Step 5: Solve for x
    x = 7,723,442,601.20/100,827.75
  6. Step 6: Final answer
    x = 76,600.37

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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.