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Finding the Fourth Proportional to 119,648.60, 179,472.09 and 57,129.56

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Solution

The fourth proportional to 119,648.60, 179,472.09 and 57,129.56 is: 85,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,648.60 : 179,472.09 = 57,129.56 : x
  2. Step 2: Convert to fraction form
    119,648.60/179,472.09 = 57,129.56/x
  3. Step 3: Cross multiply
    119,648.60x = 179,472.09 × 57,129.56
  4. Step 4: Simplify right side
    119,648.60x = 10,253,161,533.98
  5. Step 5: Solve for x
    x = 10,253,161,533.98/119,648.60
  6. Step 6: Final answer
    x = 85,693.95

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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.