Home / 191,186.12-263,843.60-105,151.74

Finding the Fourth Proportional to 191,186.12, 263,843.60 and 105,151.74

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Solution

The fourth proportional to 191,186.12, 263,843.60 and 105,151.74 is: 145,113.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,186.12 : 263,843.60 = 105,151.74 : x
  2. Step 2: Convert to fraction form
    191,186.12/263,843.60 = 105,151.74/x
  3. Step 3: Cross multiply
    191,186.12x = 263,843.60 × 105,151.74
  4. Step 4: Simplify right side
    191,186.12x = 27,743,613,102.11
  5. Step 5: Solve for x
    x = 27,743,613,102.11/191,186.12
  6. Step 6: Final answer
    x = 145,113.12

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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.