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Finding the Fourth Proportional to 139,526.87, 192,479.42 and 82,898.15

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Solution

The fourth proportional to 139,526.87, 192,479.42 and 82,898.15 is: 114,359.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,526.87 : 192,479.42 = 82,898.15 : x
  2. Step 2: Convert to fraction form
    139,526.87/192,479.42 = 82,898.15/x
  3. Step 3: Cross multiply
    139,526.87x = 192,479.42 × 82,898.15
  4. Step 4: Simplify right side
    139,526.87x = 15,956,187,075.92
  5. Step 5: Solve for x
    x = 15,956,187,075.92/139,526.87
  6. Step 6: Final answer
    x = 114,359.25

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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.