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Finding the Fourth Proportional to 108,563.60, 162,845.40 and 89,901.20

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Solution

The fourth proportional to 108,563.60, 162,845.40 and 89,901.20 is: 134,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,563.60 : 162,845.40 = 89,901.20 : x
  2. Step 2: Convert to fraction form
    108,563.60/162,845.40 = 89,901.20/x
  3. Step 3: Cross multiply
    108,563.60x = 162,845.40 × 89,901.20
  4. Step 4: Simplify right side
    108,563.60x = 14,639,996,874.48
  5. Step 5: Solve for x
    x = 14,639,996,874.48/108,563.60
  6. Step 6: Final answer
    x = 134,851.80

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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.