Home / 105,564.54-157,553.97-91,269.78

Finding the Fourth Proportional to 105,564.54, 157,553.97 and 91,269.78

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Solution

The fourth proportional to 105,564.54, 157,553.97 and 91,269.78 is: 136,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,564.54 : 157,553.97 = 91,269.78 : x
  2. Step 2: Convert to fraction form
    105,564.54/157,553.97 = 91,269.78/x
  3. Step 3: Cross multiply
    105,564.54x = 157,553.97 × 91,269.78
  4. Step 4: Simplify right side
    105,564.54x = 14,379,916,180.03
  5. Step 5: Solve for x
    x = 14,379,916,180.03/105,564.54
  6. Step 6: Final answer
    x = 136,219.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.