Home / 205,306.60-307,826.70-86,945.80

Finding the Fourth Proportional to 205,306.60, 307,826.70 and 86,945.80

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Solution

The fourth proportional to 205,306.60, 307,826.70 and 86,945.80 is: 130,362.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,306.60 : 307,826.70 = 86,945.80 : x
  2. Step 2: Convert to fraction form
    205,306.60/307,826.70 = 86,945.80/x
  3. Step 3: Cross multiply
    205,306.60x = 307,826.70 × 86,945.80
  4. Step 4: Simplify right side
    205,306.60x = 26,764,238,692.86
  5. Step 5: Solve for x
    x = 26,764,238,692.86/205,306.60
  6. Step 6: Final answer
    x = 130,362.29

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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.