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Finding the Fourth Proportional to 108,702.96, 163,027.08 and 42,120.24

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Solution

The fourth proportional to 108,702.96, 163,027.08 and 42,120.24 is: 63,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,702.96 : 163,027.08 = 42,120.24 : x
  2. Step 2: Convert to fraction form
    108,702.96/163,027.08 = 42,120.24/x
  3. Step 3: Cross multiply
    108,702.96x = 163,027.08 × 42,120.24
  4. Step 4: Simplify right side
    108,702.96x = 6,866,739,736.10
  5. Step 5: Solve for x
    x = 6,866,739,736.10/108,702.96
  6. Step 6: Final answer
    x = 63,169.76

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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.