Home / 100,571.36-138,773.06-58,121.70

Finding the Fourth Proportional to 100,571.36, 138,773.06 and 58,121.70

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Solution

The fourth proportional to 100,571.36, 138,773.06 and 58,121.70 is: 80,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,571.36 : 138,773.06 = 58,121.70 : x
  2. Step 2: Convert to fraction form
    100,571.36/138,773.06 = 58,121.70/x
  3. Step 3: Cross multiply
    100,571.36x = 138,773.06 × 58,121.70
  4. Step 4: Simplify right side
    100,571.36x = 8,065,725,176.93
  5. Step 5: Solve for x
    x = 8,065,725,176.93/100,571.36
  6. Step 6: Final answer
    x = 80,199.03

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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.