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Finding the Fourth Proportional to 132,145.80, 197,813.70 and 72,799.80

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Solution

The fourth proportional to 132,145.80, 197,813.70 and 72,799.80 is: 108,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,145.80 : 197,813.70 = 72,799.80 : x
  2. Step 2: Convert to fraction form
    132,145.80/197,813.70 = 72,799.80/x
  3. Step 3: Cross multiply
    132,145.80x = 197,813.70 × 72,799.80
  4. Step 4: Simplify right side
    132,145.80x = 14,400,797,797.26
  5. Step 5: Solve for x
    x = 14,400,797,797.26/132,145.80
  6. Step 6: Final answer
    x = 108,976.58

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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.