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Finding the Fourth Proportional to 139,573.13, 192,528.83 and 82,981.13

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Solution

The fourth proportional to 139,573.13, 192,528.83 and 82,981.13 is: 114,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.13 : 192,528.83 = 82,981.13 : x
  2. Step 2: Convert to fraction form
    139,573.13/192,528.83 = 82,981.13/x
  3. Step 3: Cross multiply
    139,573.13x = 192,528.83 × 82,981.13
  4. Step 4: Simplify right side
    139,573.13x = 15,976,259,115.79
  5. Step 5: Solve for x
    x = 15,976,259,115.79/139,573.13
  6. Step 6: Final answer
    x = 114,465.15

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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.