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Finding the Fourth Proportional to 145,591.44, 218,423.42 and 115,718.40

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Solution

The fourth proportional to 145,591.44, 218,423.42 and 115,718.40 is: 173,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,591.44 : 218,423.42 = 115,718.40 : x
  2. Step 2: Convert to fraction form
    145,591.44/218,423.42 = 115,718.40/x
  3. Step 3: Cross multiply
    145,591.44x = 218,423.42 × 115,718.40
  4. Step 4: Simplify right side
    145,591.44x = 25,275,608,540.28
  5. Step 5: Solve for x
    x = 25,275,608,540.28/145,591.44
  6. Step 6: Final answer
    x = 173,606.42

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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.