Home / 100,860.89-139,182.51-55,530.26

Finding the Fourth Proportional to 100,860.89, 139,182.51 and 55,530.26

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Solution

The fourth proportional to 100,860.89, 139,182.51 and 55,530.26 is: 76,628.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.89 : 139,182.51 = 55,530.26 : x
  2. Step 2: Convert to fraction form
    100,860.89/139,182.51 = 55,530.26/x
  3. Step 3: Cross multiply
    100,860.89x = 139,182.51 × 55,530.26
  4. Step 4: Simplify right side
    100,860.89x = 7,728,841,523.95
  5. Step 5: Solve for x
    x = 7,728,841,523.95/100,860.89
  6. Step 6: Final answer
    x = 76,628.73

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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.