Home / 268,021.20-402,032.76-90,529.80

Finding the Fourth Proportional to 268,021.20, 402,032.76 and 90,529.80

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Solution

The fourth proportional to 268,021.20, 402,032.76 and 90,529.80 is: 135,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,021.20 : 402,032.76 = 90,529.80 : x
  2. Step 2: Convert to fraction form
    268,021.20/402,032.76 = 90,529.80/x
  3. Step 3: Cross multiply
    268,021.20x = 402,032.76 × 90,529.80
  4. Step 4: Simplify right side
    268,021.20x = 36,395,945,356.25
  5. Step 5: Solve for x
    x = 36,395,945,356.25/268,021.20
  6. Step 6: Final answer
    x = 135,795.02

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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.