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Finding the Fourth Proportional to 139,633.26, 192,698.69 and 75,973.47

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Solution

The fourth proportional to 139,633.26, 192,698.69 and 75,973.47 is: 104,846.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,633.26 : 192,698.69 = 75,973.47 : x
  2. Step 2: Convert to fraction form
    139,633.26/192,698.69 = 75,973.47/x
  3. Step 3: Cross multiply
    139,633.26x = 192,698.69 × 75,973.47
  4. Step 4: Simplify right side
    139,633.26x = 14,639,988,143.75
  5. Step 5: Solve for x
    x = 14,639,988,143.75/139,633.26
  6. Step 6: Final answer
    x = 104,846.00

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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.