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Finding the Fourth Proportional to 131,404.60, 197,106.90 and 48,287.80

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Solution

The fourth proportional to 131,404.60, 197,106.90 and 48,287.80 is: 72,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,404.60 : 197,106.90 = 48,287.80 : x
  2. Step 2: Convert to fraction form
    131,404.60/197,106.90 = 48,287.80/x
  3. Step 3: Cross multiply
    131,404.60x = 197,106.90 × 48,287.80
  4. Step 4: Simplify right side
    131,404.60x = 9,517,858,565.82
  5. Step 5: Solve for x
    x = 9,517,858,565.82/131,404.60
  6. Step 6: Final answer
    x = 72,431.70

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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.