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Finding the Fourth Proportional to 119,955.09, 164,337.72 and 115,469.31

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Solution

The fourth proportional to 119,955.09, 164,337.72 and 115,469.31 is: 158,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,955.09 : 164,337.72 = 115,469.31 : x
  2. Step 2: Convert to fraction form
    119,955.09/164,337.72 = 115,469.31/x
  3. Step 3: Cross multiply
    119,955.09x = 164,337.72 × 115,469.31
  4. Step 4: Simplify right side
    119,955.09x = 18,975,963,135.37
  5. Step 5: Solve for x
    x = 18,975,963,135.37/119,955.09
  6. Step 6: Final answer
    x = 158,192.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.