Home / 108,005.20-162,007.80-68,590.60

Finding the Fourth Proportional to 108,005.20, 162,007.80 and 68,590.60

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Solution

The fourth proportional to 108,005.20, 162,007.80 and 68,590.60 is: 102,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,005.20 : 162,007.80 = 68,590.60 : x
  2. Step 2: Convert to fraction form
    108,005.20/162,007.80 = 68,590.60/x
  3. Step 3: Cross multiply
    108,005.20x = 162,007.80 × 68,590.60
  4. Step 4: Simplify right side
    108,005.20x = 11,112,212,206.68
  5. Step 5: Solve for x
    x = 11,112,212,206.68/108,005.20
  6. Step 6: Final answer
    x = 102,885.90

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1.5x scale

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.