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Finding the Fourth Proportional to 133,685.28, 184,453.20 and 74,069.28

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Solution

The fourth proportional to 133,685.28, 184,453.20 and 74,069.28 is: 102,197.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,685.28 : 184,453.20 = 74,069.28 : x
  2. Step 2: Convert to fraction form
    133,685.28/184,453.20 = 74,069.28/x
  3. Step 3: Cross multiply
    133,685.28x = 184,453.20 × 74,069.28
  4. Step 4: Simplify right side
    133,685.28x = 13,662,315,717.70
  5. Step 5: Solve for x
    x = 13,662,315,717.70/133,685.28
  6. Step 6: Final answer
    x = 102,197.61

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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.