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Finding the Fourth Proportional to 133,361.52, 184,037.88 and 72,931.92

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Solution

The fourth proportional to 133,361.52, 184,037.88 and 72,931.92 is: 100,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,361.52 : 184,037.88 = 72,931.92 : x
  2. Step 2: Convert to fraction form
    133,361.52/184,037.88 = 72,931.92/x
  3. Step 3: Cross multiply
    133,361.52x = 184,037.88 × 72,931.92
  4. Step 4: Simplify right side
    133,361.52x = 13,422,235,941.13
  5. Step 5: Solve for x
    x = 13,422,235,941.13/133,361.52
  6. Step 6: Final answer
    x = 100,645.49

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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.