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Finding the Fourth Proportional to 126,490.61, 174,575.39 and 75,505.50

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Solution

The fourth proportional to 126,490.61, 174,575.39 and 75,505.50 is: 104,208.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,490.61 : 174,575.39 = 75,505.50 : x
  2. Step 2: Convert to fraction form
    126,490.61/174,575.39 = 75,505.50/x
  3. Step 3: Cross multiply
    126,490.61x = 174,575.39 × 75,505.50
  4. Step 4: Simplify right side
    126,490.61x = 13,181,401,732.12
  5. Step 5: Solve for x
    x = 13,181,401,732.12/126,490.61
  6. Step 6: Final answer
    x = 104,208.54

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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.