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Finding the Fourth Proportional to 125,629, 188,529.90 and 51,757

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Solution

The fourth proportional to 125,629, 188,529.90 and 51,757 is: 77,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,629 : 188,529.90 = 51,757 : x
  2. Step 2: Convert to fraction form
    125,629/188,529.90 = 51,757/x
  3. Step 3: Cross multiply
    125,629x = 188,529.90 × 51,757
  4. Step 4: Simplify right side
    125,629x = 9,757,742,034.30
  5. Step 5: Solve for x
    x = 9,757,742,034.30/125,629
  6. Step 6: Final answer
    x = 77,671.10

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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.