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Finding the Fourth Proportional to 128,883.56, 177,854.64 and 71,525.39

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Solution

The fourth proportional to 128,883.56, 177,854.64 and 71,525.39 is: 98,702.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,883.56 : 177,854.64 = 71,525.39 : x
  2. Step 2: Convert to fraction form
    128,883.56/177,854.64 = 71,525.39/x
  3. Step 3: Cross multiply
    128,883.56x = 177,854.64 × 71,525.39
  4. Step 4: Simplify right side
    128,883.56x = 12,721,121,600.04
  5. Step 5: Solve for x
    x = 12,721,121,600.04/128,883.56
  6. Step 6: Final answer
    x = 98,702.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.