Home / 99,742.26-137,644.55-54,420.33

Finding the Fourth Proportional to 99,742.26, 137,644.55 and 54,420.33

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Solution

The fourth proportional to 99,742.26, 137,644.55 and 54,420.33 is: 75,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,742.26 : 137,644.55 = 54,420.33 : x
  2. Step 2: Convert to fraction form
    99,742.26/137,644.55 = 54,420.33/x
  3. Step 3: Cross multiply
    99,742.26x = 137,644.55 × 54,420.33
  4. Step 4: Simplify right side
    99,742.26x = 7,490,661,561.60
  5. Step 5: Solve for x
    x = 7,490,661,561.60/99,742.26
  6. Step 6: Final answer
    x = 75,100.18

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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.