Home / 191,139.11-263,778.74-105,104.64

Finding the Fourth Proportional to 191,139.11, 263,778.74 and 105,104.64

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Solution

The fourth proportional to 191,139.11, 263,778.74 and 105,104.64 is: 145,048.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,139.11 : 263,778.74 = 105,104.64 : x
  2. Step 2: Convert to fraction form
    191,139.11/263,778.74 = 105,104.64/x
  3. Step 3: Cross multiply
    191,139.11x = 263,778.74 × 105,104.64
  4. Step 4: Simplify right side
    191,139.11x = 27,724,369,507.35
  5. Step 5: Solve for x
    x = 27,724,369,507.35/191,139.11
  6. Step 6: Final answer
    x = 145,048.12

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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.