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Finding the Fourth Proportional to 139,677.85, 192,751.73 and 76,014.28

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Solution

The fourth proportional to 139,677.85, 192,751.73 and 76,014.28 is: 104,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677.85 : 192,751.73 = 76,014.28 : x
  2. Step 2: Convert to fraction form
    139,677.85/192,751.73 = 76,014.28/x
  3. Step 3: Cross multiply
    139,677.85x = 192,751.73 × 76,014.28
  4. Step 4: Simplify right side
    139,677.85x = 14,651,883,010.95
  5. Step 5: Solve for x
    x = 14,651,883,010.95/139,677.85
  6. Step 6: Final answer
    x = 104,897.69

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1.5x scale

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.