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Finding the Fourth Proportional to 132,013.40, 182,060.34 and 103,669.88

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Solution

The fourth proportional to 132,013.40, 182,060.34 and 103,669.88 is: 142,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,013.40 : 182,060.34 = 103,669.88 : x
  2. Step 2: Convert to fraction form
    132,013.40/182,060.34 = 103,669.88/x
  3. Step 3: Cross multiply
    132,013.40x = 182,060.34 × 103,669.88
  4. Step 4: Simplify right side
    132,013.40x = 18,874,173,600.56
  5. Step 5: Solve for x
    x = 18,874,173,600.56/132,013.40
  6. Step 6: Final answer
    x = 142,971.65

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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.