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Finding the Fourth Proportional to 108,889.44, 163,181.04 and 86,603.92

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Solution

The fourth proportional to 108,889.44, 163,181.04 and 86,603.92 is: 129,784.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,889.44 : 163,181.04 = 86,603.92 : x
  2. Step 2: Convert to fraction form
    108,889.44/163,181.04 = 86,603.92/x
  3. Step 3: Cross multiply
    108,889.44x = 163,181.04 × 86,603.92
  4. Step 4: Simplify right side
    108,889.44x = 14,132,117,733.68
  5. Step 5: Solve for x
    x = 14,132,117,733.68/108,889.44
  6. Step 6: Final answer
    x = 129,784.10

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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.