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Finding the Fourth Proportional to 139,562.96, 192,588.99 and 75,900.74

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Solution

The fourth proportional to 139,562.96, 192,588.99 and 75,900.74 is: 104,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,562.96 : 192,588.99 = 75,900.74 : x
  2. Step 2: Convert to fraction form
    139,562.96/192,588.99 = 75,900.74/x
  3. Step 3: Cross multiply
    139,562.96x = 192,588.99 × 75,900.74
  4. Step 4: Simplify right side
    139,562.96x = 14,617,646,856.85
  5. Step 5: Solve for x
    x = 14,617,646,856.85/139,562.96
  6. Step 6: Final answer
    x = 104,738.73

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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.