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Finding the Fourth Proportional to 139,777.48, 192,891.02 and 79,347.60

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Solution

The fourth proportional to 139,777.48, 192,891.02 and 79,347.60 is: 109,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,777.48 : 192,891.02 = 79,347.60 : x
  2. Step 2: Convert to fraction form
    139,777.48/192,891.02 = 79,347.60/x
  3. Step 3: Cross multiply
    139,777.48x = 192,891.02 × 79,347.60
  4. Step 4: Simplify right side
    139,777.48x = 15,305,438,137.36
  5. Step 5: Solve for x
    x = 15,305,438,137.36/139,777.48
  6. Step 6: Final answer
    x = 109,498.60

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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.