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Finding the Fourth Proportional to 139,265.30, 192,188.45 and 75,603.11

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Solution

The fourth proportional to 139,265.30, 192,188.45 and 75,603.11 is: 104,333.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,265.30 : 192,188.45 = 75,603.11 : x
  2. Step 2: Convert to fraction form
    139,265.30/192,188.45 = 75,603.11/x
  3. Step 3: Cross multiply
    139,265.30x = 192,188.45 × 75,603.11
  4. Step 4: Simplify right side
    139,265.30x = 14,530,043,754.15
  5. Step 5: Solve for x
    x = 14,530,043,754.15/139,265.30
  6. Step 6: Final answer
    x = 104,333.55

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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.