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Finding the Fourth Proportional to 108,336, 149,520.96 and 63,615.36

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Solution

The fourth proportional to 108,336, 149,520.96 and 63,615.36 is: 87,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,336 : 149,520.96 = 63,615.36 : x
  2. Step 2: Convert to fraction form
    108,336/149,520.96 = 63,615.36/x
  3. Step 3: Cross multiply
    108,336x = 149,520.96 × 63,615.36
  4. Step 4: Simplify right side
    108,336x = 9,511,829,697.95
  5. Step 5: Solve for x
    x = 9,511,829,697.95/108,336
  6. Step 6: Final answer
    x = 87,799.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.