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Finding the Fourth Proportional to 139,294.86, 192,227.91 and 75,632.70

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Solution

The fourth proportional to 139,294.86, 192,227.91 and 75,632.70 is: 104,373.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,294.86 : 192,227.91 = 75,632.70 : x
  2. Step 2: Convert to fraction form
    139,294.86/192,227.91 = 75,632.70/x
  3. Step 3: Cross multiply
    139,294.86x = 192,227.91 × 75,632.70
  4. Step 4: Simplify right side
    139,294.86x = 14,538,715,848.66
  5. Step 5: Solve for x
    x = 14,538,715,848.66/139,294.86
  6. Step 6: Final answer
    x = 104,373.67

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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.