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Finding the Fourth Proportional to 179,672.58, 269,402.76 and 79,785

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Solution

The fourth proportional to 179,672.58, 269,402.76 and 79,785 is: 119,630.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,672.58 : 269,402.76 = 79,785 : x
  2. Step 2: Convert to fraction form
    179,672.58/269,402.76 = 79,785/x
  3. Step 3: Cross multiply
    179,672.58x = 269,402.76 × 79,785
  4. Step 4: Simplify right side
    179,672.58x = 21,494,299,206.60
  5. Step 5: Solve for x
    x = 21,494,299,206.60/179,672.58
  6. Step 6: Final answer
    x = 119,630.38

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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.