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Finding the Fourth Proportional to 108,553.79, 163,081 and 104,069.83

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Solution

The fourth proportional to 108,553.79, 163,081 and 104,069.83 is: 156,344.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,553.79 : 163,081 = 104,069.83 : x
  2. Step 2: Convert to fraction form
    108,553.79/163,081 = 104,069.83/x
  3. Step 3: Cross multiply
    108,553.79x = 163,081 × 104,069.83
  4. Step 4: Simplify right side
    108,553.79x = 16,971,811,946.23
  5. Step 5: Solve for x
    x = 16,971,811,946.23/108,553.79
  6. Step 6: Final answer
    x = 156,344.72

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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.