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Finding the Fourth Proportional to 108,531.66, 163,047.76 and 104,047.68

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Solution

The fourth proportional to 108,531.66, 163,047.76 and 104,047.68 is: 156,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,531.66 : 163,047.76 = 104,047.68 : x
  2. Step 2: Convert to fraction form
    108,531.66/163,047.76 = 104,047.68/x
  3. Step 3: Cross multiply
    108,531.66x = 163,047.76 × 104,047.68
  4. Step 4: Simplify right side
    108,531.66x = 16,964,741,157.20
  5. Step 5: Solve for x
    x = 16,964,741,157.20/108,531.66
  6. Step 6: Final answer
    x = 156,311.45

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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.