Home / 108,991.36-163,400.16-100,243.84

Finding the Fourth Proportional to 108,991.36, 163,400.16 and 100,243.84

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Solution

The fourth proportional to 108,991.36, 163,400.16 and 100,243.84 is: 150,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,991.36 : 163,400.16 = 100,243.84 : x
  2. Step 2: Convert to fraction form
    108,991.36/163,400.16 = 100,243.84/x
  3. Step 3: Cross multiply
    108,991.36x = 163,400.16 × 100,243.84
  4. Step 4: Simplify right side
    108,991.36x = 16,379,859,495.01
  5. Step 5: Solve for x
    x = 16,379,859,495.01/108,991.36
  6. Step 6: Final answer
    x = 150,285.85

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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.