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Finding the Fourth Proportional to 108,775.62, 163,143.94 and 69,215.22

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Solution

The fourth proportional to 108,775.62, 163,143.94 and 69,215.22 is: 103,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,775.62 : 163,143.94 = 69,215.22 : x
  2. Step 2: Convert to fraction form
    108,775.62/163,143.94 = 69,215.22/x
  3. Step 3: Cross multiply
    108,775.62x = 163,143.94 × 69,215.22
  4. Step 4: Simplify right side
    108,775.62x = 11,292,043,698.77
  5. Step 5: Solve for x
    x = 11,292,043,698.77/108,775.62
  6. Step 6: Final answer
    x = 103,810.43

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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.