Home / 272,090.09-408,139.27-103,619.75

Finding the Fourth Proportional to 272,090.09, 408,139.27 and 103,619.75

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Solution

The fourth proportional to 272,090.09, 408,139.27 and 103,619.75 is: 155,431.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,090.09 : 408,139.27 = 103,619.75 : x
  2. Step 2: Convert to fraction form
    272,090.09/408,139.27 = 103,619.75/x
  3. Step 3: Cross multiply
    272,090.09x = 408,139.27 × 103,619.75
  4. Step 4: Simplify right side
    272,090.09x = 42,291,286,822.84
  5. Step 5: Solve for x
    x = 42,291,286,822.84/272,090.09
  6. Step 6: Final answer
    x = 155,431.19

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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.