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Finding the Fourth Proportional to 132,877.76, 183,372.75 and 72,447.92

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Solution

The fourth proportional to 132,877.76, 183,372.75 and 72,447.92 is: 99,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,877.76 : 183,372.75 = 72,447.92 : x
  2. Step 2: Convert to fraction form
    132,877.76/183,372.75 = 72,447.92/x
  3. Step 3: Cross multiply
    132,877.76x = 183,372.75 × 72,447.92
  4. Step 4: Simplify right side
    132,877.76x = 13,284,973,043.08
  5. Step 5: Solve for x
    x = 13,284,973,043.08/132,877.76
  6. Step 6: Final answer
    x = 99,978.91

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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.