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Finding the Fourth Proportional to 132,661.91, 183,076.92 and 72,235.10

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Solution

The fourth proportional to 132,661.91, 183,076.92 and 72,235.10 is: 99,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,661.91 : 183,076.92 = 72,235.10 : x
  2. Step 2: Convert to fraction form
    132,661.91/183,076.92 = 72,235.10/x
  3. Step 3: Cross multiply
    132,661.91x = 183,076.92 × 72,235.10
  4. Step 4: Simplify right side
    132,661.91x = 13,224,579,623.89
  5. Step 5: Solve for x
    x = 13,224,579,623.89/132,661.91
  6. Step 6: Final answer
    x = 99,686.34

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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.