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Finding the Fourth Proportional to 139,457.05, 192,450.75 and 75,794.85

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Solution

The fourth proportional to 139,457.05, 192,450.75 and 75,794.85 is: 104,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,457.05 : 192,450.75 = 75,794.85 : x
  2. Step 2: Convert to fraction form
    139,457.05/192,450.75 = 75,794.85/x
  3. Step 3: Cross multiply
    139,457.05x = 192,450.75 × 75,794.85
  4. Step 4: Simplify right side
    139,457.05x = 14,586,774,387.41
  5. Step 5: Solve for x
    x = 14,586,774,387.41/139,457.05
  6. Step 6: Final answer
    x = 104,596.90

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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.