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Finding the Fourth Proportional to 139,532.22, 192,549.96 and 79,108.65

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Solution

The fourth proportional to 139,532.22, 192,549.96 and 79,108.65 is: 109,167.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,532.22 : 192,549.96 = 79,108.65 : x
  2. Step 2: Convert to fraction form
    139,532.22/192,549.96 = 79,108.65/x
  3. Step 3: Cross multiply
    139,532.22x = 192,549.96 × 79,108.65
  4. Step 4: Simplify right side
    139,532.22x = 15,232,367,393.15
  5. Step 5: Solve for x
    x = 15,232,367,393.15/139,532.22
  6. Step 6: Final answer
    x = 109,167.38

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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.