Home / 205,011.88-307,632.65-86,771.73

Finding the Fourth Proportional to 205,011.88, 307,632.65 and 86,771.73

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Solution

The fourth proportional to 205,011.88, 307,632.65 and 86,771.73 is: 130,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,011.88 : 307,632.65 = 86,771.73 : x
  2. Step 2: Convert to fraction form
    205,011.88/307,632.65 = 86,771.73/x
  3. Step 3: Cross multiply
    205,011.88x = 307,632.65 × 86,771.73
  4. Step 4: Simplify right side
    205,011.88x = 26,693,817,244.98
  5. Step 5: Solve for x
    x = 26,693,817,244.98/205,011.88
  6. Step 6: Final answer
    x = 130,206.20

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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.