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Finding the Fourth Proportional to 101,571.68, 140,103.60 and 63,780.32

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Solution

The fourth proportional to 101,571.68, 140,103.60 and 63,780.32 is: 87,975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,571.68 : 140,103.60 = 63,780.32 : x
  2. Step 2: Convert to fraction form
    101,571.68/140,103.60 = 63,780.32/x
  3. Step 3: Cross multiply
    101,571.68x = 140,103.60 × 63,780.32
  4. Step 4: Simplify right side
    101,571.68x = 8,935,852,441.15
  5. Step 5: Solve for x
    x = 8,935,852,441.15/101,571.68
  6. Step 6: Final answer
    x = 87,975.83

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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.