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Finding the Fourth Proportional to 131,785.60, 197,591.04 and 72,649.60

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Solution

The fourth proportional to 131,785.60, 197,591.04 and 72,649.60 is: 108,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,785.60 : 197,591.04 = 72,649.60 : x
  2. Step 2: Convert to fraction form
    131,785.60/197,591.04 = 72,649.60/x
  3. Step 3: Cross multiply
    131,785.60x = 197,591.04 × 72,649.60
  4. Step 4: Simplify right side
    131,785.60x = 14,354,910,019.58
  5. Step 5: Solve for x
    x = 14,354,910,019.58/131,785.60
  6. Step 6: Final answer
    x = 108,926.24

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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.