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Finding the Fourth Proportional to 133,865.28, 184,738.08 and 74,248

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Solution

The fourth proportional to 133,865.28, 184,738.08 and 74,248 is: 102,464.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,865.28 : 184,738.08 = 74,248 : x
  2. Step 2: Convert to fraction form
    133,865.28/184,738.08 = 74,248/x
  3. Step 3: Cross multiply
    133,865.28x = 184,738.08 × 74,248
  4. Step 4: Simplify right side
    133,865.28x = 13,716,432,963.84
  5. Step 5: Solve for x
    x = 13,716,432,963.84/133,865.28
  6. Step 6: Final answer
    x = 102,464.46

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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.