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Finding the Fourth Proportional to 139,237.92, 192,148.54 and 75,575.77

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Solution

The fourth proportional to 139,237.92, 192,148.54 and 75,575.77 is: 104,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.92 : 192,148.54 = 75,575.77 : x
  2. Step 2: Convert to fraction form
    139,237.92/192,148.54 = 75,575.77/x
  3. Step 3: Cross multiply
    139,237.92x = 192,148.54 × 75,575.77
  4. Step 4: Simplify right side
    139,237.92x = 14,521,773,195.57
  5. Step 5: Solve for x
    x = 14,521,773,195.57/139,237.92
  6. Step 6: Final answer
    x = 104,294.67

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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.