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Finding the Fourth Proportional to 133,956, 184,859.28 and 74,340

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Solution

The fourth proportional to 133,956, 184,859.28 and 74,340 is: 102,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,956 : 184,859.28 = 74,340 : x
  2. Step 2: Convert to fraction form
    133,956/184,859.28 = 74,340/x
  3. Step 3: Cross multiply
    133,956x = 184,859.28 × 74,340
  4. Step 4: Simplify right side
    133,956x = 13,742,438,875.20
  5. Step 5: Solve for x
    x = 13,742,438,875.20/133,956
  6. Step 6: Final answer
    x = 102,589.20

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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.