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Finding the Fourth Proportional to 139,572.99, 209,359.60 and 34,391.97

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Solution

The fourth proportional to 139,572.99, 209,359.60 and 34,391.97 is: 51,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,572.99 : 209,359.60 = 34,391.97 : x
  2. Step 2: Convert to fraction form
    139,572.99/209,359.60 = 34,391.97/x
  3. Step 3: Cross multiply
    139,572.99x = 209,359.60 × 34,391.97
  4. Step 4: Simplify right side
    139,572.99x = 7,200,289,082.41
  5. Step 5: Solve for x
    x = 7,200,289,082.41/139,572.99
  6. Step 6: Final answer
    x = 51,587.98

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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.