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Finding the Fourth Proportional to 132,045.81, 197,970.21 and 79,442.97

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Solution

The fourth proportional to 132,045.81, 197,970.21 and 79,442.97 is: 119,105.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,045.81 : 197,970.21 = 79,442.97 : x
  2. Step 2: Convert to fraction form
    132,045.81/197,970.21 = 79,442.97/x
  3. Step 3: Cross multiply
    132,045.81x = 197,970.21 × 79,442.97
  4. Step 4: Simplify right side
    132,045.81x = 15,727,341,453.92
  5. Step 5: Solve for x
    x = 15,727,341,453.92/132,045.81
  6. Step 6: Final answer
    x = 119,105.19

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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.