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Finding the Fourth Proportional to 131,489.70, 197,234.55 and 98,441.70

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Solution

The fourth proportional to 131,489.70, 197,234.55 and 98,441.70 is: 147,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,489.70 : 197,234.55 = 98,441.70 : x
  2. Step 2: Convert to fraction form
    131,489.70/197,234.55 = 98,441.70/x
  3. Step 3: Cross multiply
    131,489.70x = 197,234.55 × 98,441.70
  4. Step 4: Simplify right side
    131,489.70x = 19,416,104,400.74
  5. Step 5: Solve for x
    x = 19,416,104,400.74/131,489.70
  6. Step 6: Final answer
    x = 147,662.55

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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.