Home / 270,085.60-405,382.56-137,061.28

Finding the Fourth Proportional to 270,085.60, 405,382.56 and 137,061.28

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Solution

The fourth proportional to 270,085.60, 405,382.56 and 137,061.28 is: 205,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,085.60 : 405,382.56 = 137,061.28 : x
  2. Step 2: Convert to fraction form
    270,085.60/405,382.56 = 137,061.28/x
  3. Step 3: Cross multiply
    270,085.60x = 405,382.56 × 137,061.28
  4. Step 4: Simplify right side
    270,085.60x = 55,562,252,563.28
  5. Step 5: Solve for x
    x = 55,562,252,563.28/270,085.60
  6. Step 6: Final answer
    x = 205,720.90

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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.