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Finding the Fourth Proportional to 139,245.30, 192,153.36 and 75,581.74

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Solution

The fourth proportional to 139,245.30, 192,153.36 and 75,581.74 is: 104,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.30 : 192,153.36 = 75,581.74 : x
  2. Step 2: Convert to fraction form
    139,245.30/192,153.36 = 75,581.74/x
  3. Step 3: Cross multiply
    139,245.30x = 192,153.36 × 75,581.74
  4. Step 4: Simplify right side
    139,245.30x = 14,523,285,295.65
  5. Step 5: Solve for x
    x = 14,523,285,295.65/139,245.30
  6. Step 6: Final answer
    x = 104,300.00

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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.