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Finding the Fourth Proportional to 132,323.40, 198,485.10 and 79,835.40

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Solution

The fourth proportional to 132,323.40, 198,485.10 and 79,835.40 is: 119,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,323.40 : 198,485.10 = 79,835.40 : x
  2. Step 2: Convert to fraction form
    132,323.40/198,485.10 = 79,835.40/x
  3. Step 3: Cross multiply
    132,323.40x = 198,485.10 × 79,835.40
  4. Step 4: Simplify right side
    132,323.40x = 15,846,137,352.54
  5. Step 5: Solve for x
    x = 15,846,137,352.54/132,323.40
  6. Step 6: Final answer
    x = 119,753.10

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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.