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Finding the Fourth Proportional to 445,495.68, 668,111.04 and 129,852

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Solution

The fourth proportional to 445,495.68, 668,111.04 and 129,852 is: 194,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,495.68 : 668,111.04 = 129,852 : x
  2. Step 2: Convert to fraction form
    445,495.68/668,111.04 = 129,852/x
  3. Step 3: Cross multiply
    445,495.68x = 668,111.04 × 129,852
  4. Step 4: Simplify right side
    445,495.68x = 86,755,554,766.08
  5. Step 5: Solve for x
    x = 86,755,554,766.08/445,495.68
  6. Step 6: Final answer
    x = 194,739.39

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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.