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Finding the Fourth Proportional to 139,582.91, 209,371.53 and 34,402.79

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Solution

The fourth proportional to 139,582.91, 209,371.53 and 34,402.79 is: 51,603.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,582.91 : 209,371.53 = 34,402.79 : x
  2. Step 2: Convert to fraction form
    139,582.91/209,371.53 = 34,402.79/x
  3. Step 3: Cross multiply
    139,582.91x = 209,371.53 × 34,402.79
  4. Step 4: Simplify right side
    139,582.91x = 7,202,964,778.57
  5. Step 5: Solve for x
    x = 7,202,964,778.57/139,582.91
  6. Step 6: Final answer
    x = 51,603.49

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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.