Home / 90,980.37-125,588.97-78,182.79

Finding the Fourth Proportional to 90,980.37, 125,588.97 and 78,182.79

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Solution

The fourth proportional to 90,980.37, 125,588.97 and 78,182.79 is: 107,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,980.37 : 125,588.97 = 78,182.79 : x
  2. Step 2: Convert to fraction form
    90,980.37/125,588.97 = 78,182.79/x
  3. Step 3: Cross multiply
    90,980.37x = 125,588.97 × 78,182.79
  4. Step 4: Simplify right side
    90,980.37x = 9,818,896,067.83
  5. Step 5: Solve for x
    x = 9,818,896,067.83/90,980.37
  6. Step 6: Final answer
    x = 107,923.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.