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Finding the Fourth Proportional to 108,639.30, 152,198.70 and 108,639.30

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Solution

The fourth proportional to 108,639.30, 152,198.70 and 108,639.30 is: 152,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,639.30 : 152,198.70 = 108,639.30 : x
  2. Step 2: Convert to fraction form
    108,639.30/152,198.70 = 108,639.30/x
  3. Step 3: Cross multiply
    108,639.30x = 152,198.70 × 108,639.30
  4. Step 4: Simplify right side
    108,639.30x = 16,534,760,228.91
  5. Step 5: Solve for x
    x = 16,534,760,228.91/108,639.30
  6. Step 6: Final answer
    x = 152,198.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.