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Finding the Fourth Proportional to 100,828.96, 151,324.08 and 45,429.28

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Solution

The fourth proportional to 100,828.96, 151,324.08 and 45,429.28 is: 68,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,828.96 : 151,324.08 = 45,429.28 : x
  2. Step 2: Convert to fraction form
    100,828.96/151,324.08 = 45,429.28/x
  3. Step 3: Cross multiply
    100,828.96x = 151,324.08 × 45,429.28
  4. Step 4: Simplify right side
    100,828.96x = 6,874,544,001.06
  5. Step 5: Solve for x
    x = 6,874,544,001.06/100,828.96
  6. Step 6: Final answer
    x = 68,180.25

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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.