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Finding the Fourth Proportional to 139,472.14, 192,467.75 and 79,048.39

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Solution

The fourth proportional to 139,472.14, 192,467.75 and 79,048.39 is: 109,084.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,472.14 : 192,467.75 = 79,048.39 : x
  2. Step 2: Convert to fraction form
    139,472.14/192,467.75 = 79,048.39/x
  3. Step 3: Cross multiply
    139,472.14x = 192,467.75 × 79,048.39
  4. Step 4: Simplify right side
    139,472.14x = 15,214,265,248.89
  5. Step 5: Solve for x
    x = 15,214,265,248.89/139,472.14
  6. Step 6: Final answer
    x = 109,084.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.