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Finding the Fourth Proportional to 139,677.50, 192,751.26 and 76,013.93

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Solution

The fourth proportional to 139,677.50, 192,751.26 and 76,013.93 is: 104,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677.50 : 192,751.26 = 76,013.93 : x
  2. Step 2: Convert to fraction form
    139,677.50/192,751.26 = 76,013.93/x
  3. Step 3: Cross multiply
    139,677.50x = 192,751.26 × 76,013.93
  4. Step 4: Simplify right side
    139,677.50x = 14,651,780,785.05
  5. Step 5: Solve for x
    x = 14,651,780,785.05/139,677.50
  6. Step 6: Final answer
    x = 104,897.22

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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.