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Finding the Fourth Proportional to 139,484.94, 192,489.36 and 75,822.74

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Solution

The fourth proportional to 139,484.94, 192,489.36 and 75,822.74 is: 104,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,484.94 : 192,489.36 = 75,822.74 : x
  2. Step 2: Convert to fraction form
    139,484.94/192,489.36 = 75,822.74/x
  3. Step 3: Cross multiply
    139,484.94x = 192,489.36 × 75,822.74
  4. Step 4: Simplify right side
    139,484.94x = 14,595,070,696.05
  5. Step 5: Solve for x
    x = 14,595,070,696.05/139,484.94
  6. Step 6: Final answer
    x = 104,635.46

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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.