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Finding the Fourth Proportional to 108,374.70, 162,562.05 and 72,945.30

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Solution

The fourth proportional to 108,374.70, 162,562.05 and 72,945.30 is: 109,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,374.70 : 162,562.05 = 72,945.30 : x
  2. Step 2: Convert to fraction form
    108,374.70/162,562.05 = 72,945.30/x
  3. Step 3: Cross multiply
    108,374.70x = 162,562.05 × 72,945.30
  4. Step 4: Simplify right side
    108,374.70x = 11,858,137,505.87
  5. Step 5: Solve for x
    x = 11,858,137,505.87/108,374.70
  6. Step 6: Final answer
    x = 109,417.95

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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.