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Finding the Fourth Proportional to 259,085.88, 388,741.86 and 90,727.04

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Solution

The fourth proportional to 259,085.88, 388,741.86 and 90,727.04 is: 136,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,085.88 : 388,741.86 = 90,727.04 : x
  2. Step 2: Convert to fraction form
    259,085.88/388,741.86 = 90,727.04/x
  3. Step 3: Cross multiply
    259,085.88x = 388,741.86 × 90,727.04
  4. Step 4: Simplify right side
    259,085.88x = 35,269,399,253.75
  5. Step 5: Solve for x
    x = 35,269,399,253.75/259,085.88
  6. Step 6: Final answer
    x = 136,130.15

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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.