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Finding the Fourth Proportional to 139,908.39, 209,924.55 and 73,332.69

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Solution

The fourth proportional to 139,908.39, 209,924.55 and 73,332.69 is: 110,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,908.39 : 209,924.55 = 73,332.69 : x
  2. Step 2: Convert to fraction form
    139,908.39/209,924.55 = 73,332.69/x
  3. Step 3: Cross multiply
    139,908.39x = 209,924.55 × 73,332.69
  4. Step 4: Simplify right side
    139,908.39x = 15,394,331,948.54
  5. Step 5: Solve for x
    x = 15,394,331,948.54/139,908.39
  6. Step 6: Final answer
    x = 110,031.51

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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.