Home / 191,245.12-263,924.60-105,207.68

Finding the Fourth Proportional to 191,245.12, 263,924.60 and 105,207.68

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Solution

The fourth proportional to 191,245.12, 263,924.60 and 105,207.68 is: 145,190.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,245.12 : 263,924.60 = 105,207.68 : x
  2. Step 2: Convert to fraction form
    191,245.12/263,924.60 = 105,207.68/x
  3. Step 3: Cross multiply
    191,245.12x = 263,924.60 × 105,207.68
  4. Step 4: Simplify right side
    191,245.12x = 27,766,894,860.93
  5. Step 5: Solve for x
    x = 27,766,894,860.93/191,245.12
  6. Step 6: Final answer
    x = 145,190.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.