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Finding the Fourth Proportional to 139,334.76, 192,283.38 and 75,673.80

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Solution

The fourth proportional to 139,334.76, 192,283.38 and 75,673.80 is: 104,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,334.76 : 192,283.38 = 75,673.80 : x
  2. Step 2: Convert to fraction form
    139,334.76/192,283.38 = 75,673.80/x
  3. Step 3: Cross multiply
    139,334.76x = 192,283.38 × 75,673.80
  4. Step 4: Simplify right side
    139,334.76x = 14,550,814,041.44
  5. Step 5: Solve for x
    x = 14,550,814,041.44/139,334.76
  6. Step 6: Final answer
    x = 104,430.61

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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.