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Finding the Fourth Proportional to 139,295.51, 192,228.56 and 75,633.31

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Solution

The fourth proportional to 139,295.51, 192,228.56 and 75,633.31 is: 104,374.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,295.51 : 192,228.56 = 75,633.31 : x
  2. Step 2: Convert to fraction form
    139,295.51/192,228.56 = 75,633.31/x
  3. Step 3: Cross multiply
    139,295.51x = 192,228.56 × 75,633.31
  4. Step 4: Simplify right side
    139,295.51x = 14,538,882,269.33
  5. Step 5: Solve for x
    x = 14,538,882,269.33/139,295.51
  6. Step 6: Final answer
    x = 104,374.38

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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.