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Finding the Fourth Proportional to 108,752.40, 163,128.60 and 82,508.40

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Solution

The fourth proportional to 108,752.40, 163,128.60 and 82,508.40 is: 123,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,752.40 : 163,128.60 = 82,508.40 : x
  2. Step 2: Convert to fraction form
    108,752.40/163,128.60 = 82,508.40/x
  3. Step 3: Cross multiply
    108,752.40x = 163,128.60 × 82,508.40
  4. Step 4: Simplify right side
    108,752.40x = 13,459,479,780.24
  5. Step 5: Solve for x
    x = 13,459,479,780.24/108,752.40
  6. Step 6: Final answer
    x = 123,762.60

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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.