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Finding the Fourth Proportional to 133,672, 184,467.40 and 79,959.28

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Solution

The fourth proportional to 133,672, 184,467.40 and 79,959.28 is: 110,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,672 : 184,467.40 = 79,959.28 : x
  2. Step 2: Convert to fraction form
    133,672/184,467.40 = 79,959.28/x
  3. Step 3: Cross multiply
    133,672x = 184,467.40 × 79,959.28
  4. Step 4: Simplify right side
    133,672x = 14,749,880,487.47
  5. Step 5: Solve for x
    x = 14,749,880,487.47/133,672
  6. Step 6: Final answer
    x = 110,343.83

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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.