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Finding the Fourth Proportional to 108,819.36, 163,264.32 and 53,376.48

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Solution

The fourth proportional to 108,819.36, 163,264.32 and 53,376.48 is: 80,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,819.36 : 163,264.32 = 53,376.48 : x
  2. Step 2: Convert to fraction form
    108,819.36/163,264.32 = 53,376.48/x
  3. Step 3: Cross multiply
    108,819.36x = 163,264.32 × 53,376.48
  4. Step 4: Simplify right side
    108,819.36x = 8,714,474,711.19
  5. Step 5: Solve for x
    x = 8,714,474,711.19/108,819.36
  6. Step 6: Final answer
    x = 80,082.03

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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.