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Finding the Fourth Proportional to 108,830.20, 163,026.60 and 73,400.80

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Solution

The fourth proportional to 108,830.20, 163,026.60 and 73,400.80 is: 109,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,830.20 : 163,026.60 = 73,400.80 : x
  2. Step 2: Convert to fraction form
    108,830.20/163,026.60 = 73,400.80/x
  3. Step 3: Cross multiply
    108,830.20x = 163,026.60 × 73,400.80
  4. Step 4: Simplify right side
    108,830.20x = 11,966,282,861.28
  5. Step 5: Solve for x
    x = 11,966,282,861.28/108,830.20
  6. Step 6: Final answer
    x = 109,953.70

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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.