Home / 191,769.90-264,704.67-128,121.90

Finding the Fourth Proportional to 191,769.90, 264,704.67 and 128,121.90

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Solution

The fourth proportional to 191,769.90, 264,704.67 and 128,121.90 is: 176,849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,769.90 : 264,704.67 = 128,121.90 : x
  2. Step 2: Convert to fraction form
    191,769.90/264,704.67 = 128,121.90/x
  3. Step 3: Cross multiply
    191,769.90x = 264,704.67 × 128,121.90
  4. Step 4: Simplify right side
    191,769.90x = 33,914,465,259.27
  5. Step 5: Solve for x
    x = 33,914,465,259.27/191,769.90
  6. Step 6: Final answer
    x = 176,849.78

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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.