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Finding the Fourth Proportional to 108,904.80, 163,357.20 and 82,293.60

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Solution

The fourth proportional to 108,904.80, 163,357.20 and 82,293.60 is: 123,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,904.80 : 163,357.20 = 82,293.60 : x
  2. Step 2: Convert to fraction form
    108,904.80/163,357.20 = 82,293.60/x
  3. Step 3: Cross multiply
    108,904.80x = 163,357.20 × 82,293.60
  4. Step 4: Simplify right side
    108,904.80x = 13,443,252,073.92
  5. Step 5: Solve for x
    x = 13,443,252,073.92/108,904.80
  6. Step 6: Final answer
    x = 123,440.40

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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.