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Finding the Fourth Proportional to 132,626.89, 183,020.88 and 78,899.59

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Solution

The fourth proportional to 132,626.89, 183,020.88 and 78,899.59 is: 108,878.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,626.89 : 183,020.88 = 78,899.59 : x
  2. Step 2: Convert to fraction form
    132,626.89/183,020.88 = 78,899.59/x
  3. Step 3: Cross multiply
    132,626.89x = 183,020.88 × 78,899.59
  4. Step 4: Simplify right side
    132,626.89x = 14,440,272,393.44
  5. Step 5: Solve for x
    x = 14,440,272,393.44/132,626.89
  6. Step 6: Final answer
    x = 108,878.92

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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.