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Finding the Fourth Proportional to 481,095.48, 721,587.74 and 126,137.68

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Solution

The fourth proportional to 481,095.48, 721,587.74 and 126,137.68 is: 189,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,095.48 : 721,587.74 = 126,137.68 : x
  2. Step 2: Convert to fraction form
    481,095.48/721,587.74 = 126,137.68/x
  3. Step 3: Cross multiply
    481,095.48x = 721,587.74 × 126,137.68
  4. Step 4: Simplify right side
    481,095.48x = 91,019,403,440.04
  5. Step 5: Solve for x
    x = 91,019,403,440.04/481,095.48
  6. Step 6: Final answer
    x = 189,191.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.