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Finding the Fourth Proportional to 104,489.48, 144,270.60 and 64,257.32

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Solution

The fourth proportional to 104,489.48, 144,270.60 and 64,257.32 is: 88,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,489.48 : 144,270.60 = 64,257.32 : x
  2. Step 2: Convert to fraction form
    104,489.48/144,270.60 = 64,257.32/x
  3. Step 3: Cross multiply
    104,489.48x = 144,270.60 × 64,257.32
  4. Step 4: Simplify right side
    104,489.48x = 9,270,442,110.79
  5. Step 5: Solve for x
    x = 9,270,442,110.79/104,489.48
  6. Step 6: Final answer
    x = 88,721.30

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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.