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Finding the Fourth Proportional to 139,677.19, 192,748.54 and 76,014.83

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Solution

The fourth proportional to 139,677.19, 192,748.54 and 76,014.83 is: 104,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677.19 : 192,748.54 = 76,014.83 : x
  2. Step 2: Convert to fraction form
    139,677.19/192,748.54 = 76,014.83/x
  3. Step 3: Cross multiply
    139,677.19x = 192,748.54 × 76,014.83
  4. Step 4: Simplify right side
    139,677.19x = 14,651,747,500.85
  5. Step 5: Solve for x
    x = 14,651,747,500.85/139,677.19
  6. Step 6: Final answer
    x = 104,897.21

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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.