Home / 205,171.20-307,526.40-105,292.80

Finding the Fourth Proportional to 205,171.20, 307,526.40 and 105,292.80

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Solution

The fourth proportional to 205,171.20, 307,526.40 and 105,292.80 is: 157,820.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,171.20 : 307,526.40 = 105,292.80 : x
  2. Step 2: Convert to fraction form
    205,171.20/307,526.40 = 105,292.80/x
  3. Step 3: Cross multiply
    205,171.20x = 307,526.40 × 105,292.80
  4. Step 4: Simplify right side
    205,171.20x = 32,380,315,729.92
  5. Step 5: Solve for x
    x = 32,380,315,729.92/205,171.20
  6. Step 6: Final answer
    x = 157,820.96

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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.