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Finding the Fourth Proportional to 129,755.66, 179,062.52 and 73,166.64

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Solution

The fourth proportional to 129,755.66, 179,062.52 and 73,166.64 is: 100,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,755.66 : 179,062.52 = 73,166.64 : x
  2. Step 2: Convert to fraction form
    129,755.66/179,062.52 = 73,166.64/x
  3. Step 3: Cross multiply
    129,755.66x = 179,062.52 × 73,166.64
  4. Step 4: Simplify right side
    129,755.66x = 13,101,402,938.33
  5. Step 5: Solve for x
    x = 13,101,402,938.33/129,755.66
  6. Step 6: Final answer
    x = 100,969.80

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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.