Home / 90,976.79-136,262.07-69,760.58

Finding the Fourth Proportional to 90,976.79, 136,262.07 and 69,760.58

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Solution

The fourth proportional to 90,976.79, 136,262.07 and 69,760.58 is: 104,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,976.79 : 136,262.07 = 69,760.58 : x
  2. Step 2: Convert to fraction form
    90,976.79/136,262.07 = 69,760.58/x
  3. Step 3: Cross multiply
    90,976.79x = 136,262.07 × 69,760.58
  4. Step 4: Simplify right side
    90,976.79x = 9,505,720,353.89
  5. Step 5: Solve for x
    x = 9,505,720,353.89/90,976.79
  6. Step 6: Final answer
    x = 104,485.11

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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.