Home / 268,277.28-402,165.78-90,660.06

Finding the Fourth Proportional to 268,277.28, 402,165.78 and 90,660.06

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Solution

The fourth proportional to 268,277.28, 402,165.78 and 90,660.06 is: 135,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,277.28 : 402,165.78 = 90,660.06 : x
  2. Step 2: Convert to fraction form
    268,277.28/402,165.78 = 90,660.06/x
  3. Step 3: Cross multiply
    268,277.28x = 402,165.78 × 90,660.06
  4. Step 4: Simplify right side
    268,277.28x = 36,460,373,744.75
  5. Step 5: Solve for x
    x = 36,460,373,744.75/268,277.28
  6. Step 6: Final answer
    x = 135,905.56

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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.