Home / 239,941.13-331,118.75-139,345.61

Finding the Fourth Proportional to 239,941.13, 331,118.75 and 139,345.61

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Solution

The fourth proportional to 239,941.13, 331,118.75 and 139,345.61 is: 192,296.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,941.13 : 331,118.75 = 139,345.61 : x
  2. Step 2: Convert to fraction form
    239,941.13/331,118.75 = 139,345.61/x
  3. Step 3: Cross multiply
    239,941.13x = 331,118.75 × 139,345.61
  4. Step 4: Simplify right side
    239,941.13x = 46,139,942,893.96
  5. Step 5: Solve for x
    x = 46,139,942,893.96/239,941.13
  6. Step 6: Final answer
    x = 192,296.93

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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.