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Finding the Fourth Proportional to 108,535.80, 162,573.30 and 90,103.80

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Solution

The fourth proportional to 108,535.80, 162,573.30 and 90,103.80 is: 134,964.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,535.80 : 162,573.30 = 90,103.80 : x
  2. Step 2: Convert to fraction form
    108,535.80/162,573.30 = 90,103.80/x
  3. Step 3: Cross multiply
    108,535.80x = 162,573.30 × 90,103.80
  4. Step 4: Simplify right side
    108,535.80x = 14,648,472,108.54
  5. Step 5: Solve for x
    x = 14,648,472,108.54/108,535.80
  6. Step 6: Final answer
    x = 134,964.43

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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.