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Finding the Fourth Proportional to 139,571.64, 192,627.54 and 79,164.18

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Solution

The fourth proportional to 139,571.64, 192,627.54 and 79,164.18 is: 109,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,571.64 : 192,627.54 = 79,164.18 : x
  2. Step 2: Convert to fraction form
    139,571.64/192,627.54 = 79,164.18/x
  3. Step 3: Cross multiply
    139,571.64x = 192,627.54 × 79,164.18
  4. Step 4: Simplify right side
    139,571.64x = 15,249,201,249.52
  5. Step 5: Solve for x
    x = 15,249,201,249.52/139,571.64
  6. Step 6: Final answer
    x = 109,257.16

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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.