Home / 100,556.56-138,759.96-58,117.84

Finding the Fourth Proportional to 100,556.56, 138,759.96 and 58,117.84

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Solution

The fourth proportional to 100,556.56, 138,759.96 and 58,117.84 is: 80,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,556.56 : 138,759.96 = 58,117.84 : x
  2. Step 2: Convert to fraction form
    100,556.56/138,759.96 = 58,117.84/x
  3. Step 3: Cross multiply
    100,556.56x = 138,759.96 × 58,117.84
  4. Step 4: Simplify right side
    100,556.56x = 8,064,429,153.69
  5. Step 5: Solve for x
    x = 8,064,429,153.69/100,556.56
  6. Step 6: Final answer
    x = 80,197.94

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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.