Home / 90,738.16-136,107.45-27,558.78

Finding the Fourth Proportional to 90,738.16, 136,107.45 and 27,558.78

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Solution

The fourth proportional to 90,738.16, 136,107.45 and 27,558.78 is: 41,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.16 : 136,107.45 = 27,558.78 : x
  2. Step 2: Convert to fraction form
    90,738.16/136,107.45 = 27,558.78/x
  3. Step 3: Cross multiply
    90,738.16x = 136,107.45 × 27,558.78
  4. Step 4: Simplify right side
    90,738.16x = 3,750,955,270.91
  5. Step 5: Solve for x
    x = 3,750,955,270.91/90,738.16
  6. Step 6: Final answer
    x = 41,338.23

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1.5x scale

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.