Home / 205,011.20-307,529.76-86,666.96

Finding the Fourth Proportional to 205,011.20, 307,529.76 and 86,666.96

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Solution

The fourth proportional to 205,011.20, 307,529.76 and 86,666.96 is: 130,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,011.20 : 307,529.76 = 86,666.96 : x
  2. Step 2: Convert to fraction form
    205,011.20/307,529.76 = 86,666.96/x
  3. Step 3: Cross multiply
    205,011.20x = 307,529.76 × 86,666.96
  4. Step 4: Simplify right side
    205,011.20x = 26,652,667,871.08
  5. Step 5: Solve for x
    x = 26,652,667,871.08/205,011.20
  6. Step 6: Final answer
    x = 130,005.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.