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Finding the Fourth Proportional to 103,382.48, 155,047.80 and 75,629.36

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Solution

The fourth proportional to 103,382.48, 155,047.80 and 75,629.36 is: 113,425.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,382.48 : 155,047.80 = 75,629.36 : x
  2. Step 2: Convert to fraction form
    103,382.48/155,047.80 = 75,629.36/x
  3. Step 3: Cross multiply
    103,382.48x = 155,047.80 × 75,629.36
  4. Step 4: Simplify right side
    103,382.48x = 11,726,165,883.41
  5. Step 5: Solve for x
    x = 11,726,165,883.41/103,382.48
  6. Step 6: Final answer
    x = 113,425.08

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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.