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Finding the Fourth Proportional to 139,287.44, 192,211.32 and 75,623.84

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Solution

The fourth proportional to 139,287.44, 192,211.32 and 75,623.84 is: 104,358.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,287.44 : 192,211.32 = 75,623.84 : x
  2. Step 2: Convert to fraction form
    139,287.44/192,211.32 = 75,623.84/x
  3. Step 3: Cross multiply
    139,287.44x = 192,211.32 × 75,623.84
  4. Step 4: Simplify right side
    139,287.44x = 14,535,758,109.87
  5. Step 5: Solve for x
    x = 14,535,758,109.87/139,287.44
  6. Step 6: Final answer
    x = 104,358.00

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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.