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Finding the Fourth Proportional to 139,677.60, 192,751.39 and 76,014.03

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Solution

The fourth proportional to 139,677.60, 192,751.39 and 76,014.03 is: 104,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677.60 : 192,751.39 = 76,014.03 : x
  2. Step 2: Convert to fraction form
    139,677.60/192,751.39 = 76,014.03/x
  3. Step 3: Cross multiply
    139,677.60x = 192,751.39 × 76,014.03
  4. Step 4: Simplify right side
    139,677.60x = 14,651,808,788.21
  5. Step 5: Solve for x
    x = 14,651,808,788.21/139,677.60
  6. Step 6: Final answer
    x = 104,897.34

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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.