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Finding the Fourth Proportional to 139,236.92, 192,147.12 and 75,574.70

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Solution

The fourth proportional to 139,236.92, 192,147.12 and 75,574.70 is: 104,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236.92 : 192,147.12 = 75,574.70 : x
  2. Step 2: Convert to fraction form
    139,236.92/192,147.12 = 75,574.70/x
  3. Step 3: Cross multiply
    139,236.92x = 192,147.12 × 75,574.70
  4. Step 4: Simplify right side
    139,236.92x = 14,521,460,949.86
  5. Step 5: Solve for x
    x = 14,521,460,949.86/139,236.92
  6. Step 6: Final answer
    x = 104,293.18

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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.