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Finding the Fourth Proportional to 162,642.75, 224,448.12 and 91,029.39

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Solution

The fourth proportional to 162,642.75, 224,448.12 and 91,029.39 is: 125,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,642.75 : 224,448.12 = 91,029.39 : x
  2. Step 2: Convert to fraction form
    162,642.75/224,448.12 = 91,029.39/x
  3. Step 3: Cross multiply
    162,642.75x = 224,448.12 × 91,029.39
  4. Step 4: Simplify right side
    162,642.75x = 20,431,375,450.25
  5. Step 5: Solve for x
    x = 20,431,375,450.25/162,642.75
  6. Step 6: Final answer
    x = 125,621.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.