Home / 99,899.54-137,900.82-61,674.55

Finding the Fourth Proportional to 99,899.54, 137,900.82 and 61,674.55

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Solution

The fourth proportional to 99,899.54, 137,900.82 and 61,674.55 is: 85,135.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,899.54 : 137,900.82 = 61,674.55 : x
  2. Step 2: Convert to fraction form
    99,899.54/137,900.82 = 61,674.55/x
  3. Step 3: Cross multiply
    99,899.54x = 137,900.82 × 61,674.55
  4. Step 4: Simplify right side
    99,899.54x = 8,504,970,904.66
  5. Step 5: Solve for x
    x = 8,504,970,904.66/99,899.54
  6. Step 6: Final answer
    x = 85,135.23

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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.