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Finding the Fourth Proportional to 129,505.82, 178,717.79 and 75,801.00

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Solution

The fourth proportional to 129,505.82, 178,717.79 and 75,801.00 is: 104,605.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,505.82 : 178,717.79 = 75,801.00 : x
  2. Step 2: Convert to fraction form
    129,505.82/178,717.79 = 75,801.00/x
  3. Step 3: Cross multiply
    129,505.82x = 178,717.79 × 75,801.00
  4. Step 4: Simplify right side
    129,505.82x = 13,546,987,054.20
  5. Step 5: Solve for x
    x = 13,546,987,054.20/129,505.82
  6. Step 6: Final answer
    x = 104,605.24

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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.