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Finding the Fourth Proportional to 133,369.49, 184,043.10 and 72,928.41

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Solution

The fourth proportional to 133,369.49, 184,043.10 and 72,928.41 is: 100,637.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,369.49 : 184,043.10 = 72,928.41 : x
  2. Step 2: Convert to fraction form
    133,369.49/184,043.10 = 72,928.41/x
  3. Step 3: Cross multiply
    133,369.49x = 184,043.10 × 72,928.41
  4. Step 4: Simplify right side
    133,369.49x = 13,421,970,654.47
  5. Step 5: Solve for x
    x = 13,421,970,654.47/133,369.49
  6. Step 6: Final answer
    x = 100,637.49

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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.