Home / 191,143.97-263,781.87-105,106.68

Finding the Fourth Proportional to 191,143.97, 263,781.87 and 105,106.68

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Solution

The fourth proportional to 191,143.97, 263,781.87 and 105,106.68 is: 145,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,143.97 : 263,781.87 = 105,106.68 : x
  2. Step 2: Convert to fraction form
    191,143.97/263,781.87 = 105,106.68/x
  3. Step 3: Cross multiply
    191,143.97x = 263,781.87 × 105,106.68
  4. Step 4: Simplify right side
    191,143.97x = 27,725,236,599.89
  5. Step 5: Solve for x
    x = 27,725,236,599.89/191,143.97
  6. Step 6: Final answer
    x = 145,048.97

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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.