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Finding the Fourth Proportional to 131,672.64, 197,508.96 and 72,477.84

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Solution

The fourth proportional to 131,672.64, 197,508.96 and 72,477.84 is: 108,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,672.64 : 197,508.96 = 72,477.84 : x
  2. Step 2: Convert to fraction form
    131,672.64/197,508.96 = 72,477.84/x
  3. Step 3: Cross multiply
    131,672.64x = 197,508.96 × 72,477.84
  4. Step 4: Simplify right side
    131,672.64x = 14,315,022,801.45
  5. Step 5: Solve for x
    x = 14,315,022,801.45/131,672.64
  6. Step 6: Final answer
    x = 108,716.76

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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.