Home / 139,842.07-192,987.93-76,183.36

Finding the Fourth Proportional to 139,842.07, 192,987.93 and 76,183.36

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Solution

The fourth proportional to 139,842.07, 192,987.93 and 76,183.36 is: 105,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,842.07 : 192,987.93 = 76,183.36 : x
  2. Step 2: Convert to fraction form
    139,842.07/192,987.93 = 76,183.36/x
  3. Step 3: Cross multiply
    139,842.07x = 192,987.93 × 76,183.36
  4. Step 4: Simplify right side
    139,842.07x = 14,702,468,750.06
  5. Step 5: Solve for x
    x = 14,702,468,750.06/139,842.07
  6. Step 6: Final answer
    x = 105,136.24

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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.