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Finding the Fourth Proportional to 139,220.82, 192,124.63 and 75,558.67

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Solution

The fourth proportional to 139,220.82, 192,124.63 and 75,558.67 is: 104,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220.82 : 192,124.63 = 75,558.67 : x
  2. Step 2: Convert to fraction form
    139,220.82/192,124.63 = 75,558.67/x
  3. Step 3: Cross multiply
    139,220.82x = 192,124.63 × 75,558.67
  4. Step 4: Simplify right side
    139,220.82x = 14,516,680,847.83
  5. Step 5: Solve for x
    x = 14,516,680,847.83/139,220.82
  6. Step 6: Final answer
    x = 104,270.90

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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.