Home / 90,919.09-125,434.41-90,778.93

Finding the Fourth Proportional to 90,919.09, 125,434.41 and 90,778.93

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Solution

The fourth proportional to 90,919.09, 125,434.41 and 90,778.93 is: 125,241.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,919.09 : 125,434.41 = 90,778.93 : x
  2. Step 2: Convert to fraction form
    90,919.09/125,434.41 = 90,778.93/x
  3. Step 3: Cross multiply
    90,919.09x = 125,434.41 × 90,778.93
  4. Step 4: Simplify right side
    90,919.09x = 11,386,800,870.97
  5. Step 5: Solve for x
    x = 11,386,800,870.97/90,919.09
  6. Step 6: Final answer
    x = 125,241.03

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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.