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Finding the Fourth Proportional to 139,725.99, 192,848.43 and 79,302.29

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Solution

The fourth proportional to 139,725.99, 192,848.43 and 79,302.29 is: 109,452.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.99 : 192,848.43 = 79,302.29 : x
  2. Step 2: Convert to fraction form
    139,725.99/192,848.43 = 79,302.29/x
  3. Step 3: Cross multiply
    139,725.99x = 192,848.43 × 79,302.29
  4. Step 4: Simplify right side
    139,725.99x = 15,293,321,157.66
  5. Step 5: Solve for x
    x = 15,293,321,157.66/139,725.99
  6. Step 6: Final answer
    x = 109,452.23

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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.