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Finding the Fourth Proportional to 75,199.98, 103,912.83 and 71,556.06

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Solution

The fourth proportional to 75,199.98, 103,912.83 and 71,556.06 is: 98,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,199.98 : 103,912.83 = 71,556.06 : x
  2. Step 2: Convert to fraction form
    75,199.98/103,912.83 = 71,556.06/x
  3. Step 3: Cross multiply
    75,199.98x = 103,912.83 × 71,556.06
  4. Step 4: Simplify right side
    75,199.98x = 7,435,592,698.25
  5. Step 5: Solve for x
    x = 7,435,592,698.25/75,199.98
  6. Step 6: Final answer
    x = 98,877.59

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1.5x scale

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.