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Finding the Fourth Proportional to 139,282.40, 192,209.14 and 75,620.18

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Solution

The fourth proportional to 139,282.40, 192,209.14 and 75,620.18 is: 104,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,282.40 : 192,209.14 = 75,620.18 : x
  2. Step 2: Convert to fraction form
    139,282.40/192,209.14 = 75,620.18/x
  3. Step 3: Cross multiply
    139,282.40x = 192,209.14 × 75,620.18
  4. Step 4: Simplify right side
    139,282.40x = 14,534,889,764.45
  5. Step 5: Solve for x
    x = 14,534,889,764.45/139,282.40
  6. Step 6: Final answer
    x = 104,355.54

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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.