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Finding the Fourth Proportional to 179,763.52, 269,878.56 and 138,239.68

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Solution

The fourth proportional to 179,763.52, 269,878.56 and 138,239.68 is: 207,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,763.52 : 269,878.56 = 138,239.68 : x
  2. Step 2: Convert to fraction form
    179,763.52/269,878.56 = 138,239.68/x
  3. Step 3: Cross multiply
    179,763.52x = 269,878.56 × 138,239.68
  4. Step 4: Simplify right side
    179,763.52x = 37,307,925,773.26
  5. Step 5: Solve for x
    x = 37,307,925,773.26/179,763.52
  6. Step 6: Final answer
    x = 207,538.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.