Home / 100,869.28-151,326.60-30,755.68

Finding the Fourth Proportional to 100,869.28, 151,326.60 and 30,755.68

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Solution

The fourth proportional to 100,869.28, 151,326.60 and 30,755.68 is: 46,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,869.28 : 151,326.60 = 30,755.68 : x
  2. Step 2: Convert to fraction form
    100,869.28/151,326.60 = 30,755.68/x
  3. Step 3: Cross multiply
    100,869.28x = 151,326.60 × 30,755.68
  4. Step 4: Simplify right side
    100,869.28x = 4,654,152,485.09
  5. Step 5: Solve for x
    x = 4,654,152,485.09/100,869.28
  6. Step 6: Final answer
    x = 46,140.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.