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Finding the Fourth Proportional to 139,486.33, 192,444.28 and 79,052.23

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Solution

The fourth proportional to 139,486.33, 192,444.28 and 79,052.23 is: 109,065.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,486.33 : 192,444.28 = 79,052.23 : x
  2. Step 2: Convert to fraction form
    139,486.33/192,444.28 = 79,052.23/x
  3. Step 3: Cross multiply
    139,486.33x = 192,444.28 × 79,052.23
  4. Step 4: Simplify right side
    139,486.33x = 15,213,149,484.74
  5. Step 5: Solve for x
    x = 15,213,149,484.74/139,486.33
  6. Step 6: Final answer
    x = 109,065.52

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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.