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Finding the Fourth Proportional to 108,048.80, 161,878.80 and 92,496.80

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Solution

The fourth proportional to 108,048.80, 161,878.80 and 92,496.80 is: 138,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,048.80 : 161,878.80 = 92,496.80 : x
  2. Step 2: Convert to fraction form
    108,048.80/161,878.80 = 92,496.80/x
  3. Step 3: Cross multiply
    108,048.80x = 161,878.80 × 92,496.80
  4. Step 4: Simplify right side
    108,048.80x = 14,973,270,987.84
  5. Step 5: Solve for x
    x = 14,973,270,987.84/108,048.80
  6. Step 6: Final answer
    x = 138,578.78

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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.