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Finding the Fourth Proportional to 128,183.65, 176,893.27 and 71,595.03

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Solution

The fourth proportional to 128,183.65, 176,893.27 and 71,595.03 is: 98,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,183.65 : 176,893.27 = 71,595.03 : x
  2. Step 2: Convert to fraction form
    128,183.65/176,893.27 = 71,595.03/x
  3. Step 3: Cross multiply
    128,183.65x = 176,893.27 × 71,595.03
  4. Step 4: Simplify right side
    128,183.65x = 12,664,678,972.45
  5. Step 5: Solve for x
    x = 12,664,678,972.45/128,183.65
  6. Step 6: Final answer
    x = 98,801.05

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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.