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Finding the Fourth Proportional to 80,349.84, 120,406.08 and 75,856.68

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Solution

The fourth proportional to 80,349.84, 120,406.08 and 75,856.68 is: 113,672.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,349.84 : 120,406.08 = 75,856.68 : x
  2. Step 2: Convert to fraction form
    80,349.84/120,406.08 = 75,856.68/x
  3. Step 3: Cross multiply
    80,349.84x = 120,406.08 × 75,856.68
  4. Step 4: Simplify right side
    80,349.84x = 9,133,605,480.61
  5. Step 5: Solve for x
    x = 9,133,605,480.61/80,349.84
  6. Step 6: Final answer
    x = 113,672.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.