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Finding the Fourth Proportional to 110,878.28, 152,958.64 and 72,620.76

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Solution

The fourth proportional to 110,878.28, 152,958.64 and 72,620.76 is: 100,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,878.28 : 152,958.64 = 72,620.76 : x
  2. Step 2: Convert to fraction form
    110,878.28/152,958.64 = 72,620.76/x
  3. Step 3: Cross multiply
    110,878.28x = 152,958.64 × 72,620.76
  4. Step 4: Simplify right side
    110,878.28x = 11,107,972,685.37
  5. Step 5: Solve for x
    x = 11,107,972,685.37/110,878.28
  6. Step 6: Final answer
    x = 100,181.68

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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.