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Finding the Fourth Proportional to 139,289.94, 192,214.77 and 75,626.34

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Solution

The fourth proportional to 139,289.94, 192,214.77 and 75,626.34 is: 104,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,289.94 : 192,214.77 = 75,626.34 : x
  2. Step 2: Convert to fraction form
    139,289.94/192,214.77 = 75,626.34/x
  3. Step 3: Cross multiply
    139,289.94x = 192,214.77 × 75,626.34
  4. Step 4: Simplify right side
    139,289.94x = 14,536,499,549.04
  5. Step 5: Solve for x
    x = 14,536,499,549.04/139,289.94
  6. Step 6: Final answer
    x = 104,361.45

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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.