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Finding the Fourth Proportional to 127,055.77, 175,542.90 and 108,135.49

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Solution

The fourth proportional to 127,055.77, 175,542.90 and 108,135.49 is: 149,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,055.77 : 175,542.90 = 108,135.49 : x
  2. Step 2: Convert to fraction form
    127,055.77/175,542.90 = 108,135.49/x
  3. Step 3: Cross multiply
    127,055.77x = 175,542.90 × 108,135.49
  4. Step 4: Simplify right side
    127,055.77x = 18,982,416,629.81
  5. Step 5: Solve for x
    x = 18,982,416,629.81/127,055.77
  6. Step 6: Final answer
    x = 149,402.25

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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.