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Finding the Fourth Proportional to 139,207.52, 192,106.64 and 82,630.24

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Solution

The fourth proportional to 139,207.52, 192,106.64 and 82,630.24 is: 114,029.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,207.52 : 192,106.64 = 82,630.24 : x
  2. Step 2: Convert to fraction form
    139,207.52/192,106.64 = 82,630.24/x
  3. Step 3: Cross multiply
    139,207.52x = 192,106.64 × 82,630.24
  4. Step 4: Simplify right side
    139,207.52x = 15,873,817,768.79
  5. Step 5: Solve for x
    x = 15,873,817,768.79/139,207.52
  6. Step 6: Final answer
    x = 114,029.89

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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.