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Finding the Fourth Proportional to 132,720, 183,153.60 and 73,104

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Solution

The fourth proportional to 132,720, 183,153.60 and 73,104 is: 100,883.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,720 : 183,153.60 = 73,104 : x
  2. Step 2: Convert to fraction form
    132,720/183,153.60 = 73,104/x
  3. Step 3: Cross multiply
    132,720x = 183,153.60 × 73,104
  4. Step 4: Simplify right side
    132,720x = 13,389,260,774.40
  5. Step 5: Solve for x
    x = 13,389,260,774.40/132,720
  6. Step 6: Final answer
    x = 100,883.52

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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.